Twitter is on the prowl. Though it made its last acquisition more than a year ago, company founder Biz Stone said on Tuesday that it's looking to add to the stable. There aren't any specific targets yet -- at least none revealed -- and Twitter is keeping its options open. The likely pool of potential acquisitions consists of third-party Twitter application developers, which is largely responsible for the micro-blogging service's growth in popularity.

Stone, one of Twitter's founders, said at a Tel Aviv news conference, "As our attention is grabbed by some of these developers, we will take a hard look at them." This refers to companies that develop applications for Apple's (AAPL) iPhone and Research in Motion's (RIMM) Blackberry. It also refers to developers for the Web and desktop, such as HootSuite and TweetDeck.

Yahoo! (YHOO) is the latest company that wants to optimize its search results for Twitter. This follows moves by Microsoft (MSFT) and Google (GOOG) to integrate Twitter data into their search results. Unlike its competitors, however, Yahoo! wants to do this without spending a dime (well, without giving a dime to the hot new social media platform).

Twitter's microblogging service has become famous not only for its rapid growth but also because it's found no way to turn it into revenue. Its recent discussions with Microsoft and Google demonstrated that Twitter can indeed bring in some cash -- by licensing its data for use in fine-tuning search engines. With two of the top search engines now optimizing for Twitter, it was only a matter of time before Yahoo! would rush to join the party.

An unemployment rate of 10.2% means that serious jobseekers are using every tool they can find. So, it's not at all shocking that social networking tools top the list, with LinkedIn, Facebook and Twitter leading the charge. Openings are being tweeted, hints of a new position are being monitored and hot candidates are being hit up directly, even if they aren't saying they're on the prowl for a new gig. Social media is a tool to use in a job hunt but not necessarily the only one, according to Challenger, Gray & Christmas. Instead, it makes sense to balance a search with many tools.

John Challenger, CEO, says, "The job search has changed radically over the last two decades with the advent of electronic mail, the internet, social networking, smart phones, etc. However, it is important to remember that all of these technologies simply enhance the job search; they will never replace the face-to-face connections that are critical to a successful search." But, he continues that "we feel that these new networking tools are essential and now advise all of the job seekers going through our program to open LinkedIn accounts and to consider other services such as Facebook and Twitter.

Imagine taking the personal connections and interactions that occur every day on the likes of Facebook and Twitter... and bringing them to bear on an education. To a large extent, this hasn't been done yet, but the potential is profound. In a new report by the Center for Community Survey for Student Engagement, two-year programs aren't taking advantage of the tools at their disposal -- plenty of growth is still possible. Kay McClenney, director of the CCSSE, says, "Colleges are not taking advantage of that particular set of tools for making connections with students to the extent that they could."

Michael Moe knows how to make headlines: Talk about Twitter and predictably people will bite (I'm proof of that). He led the team at NeXt Up Research that calculated the value of the micro blogging service and arrived at $526 million to $674 million -- half what Twitter is generally believed to be worth.

Really?

The team estimates that Twitter will generate revenues of $114 million to $134 million in 2013. In 2014, Twitter is expected to post revenues of $126 million to $148 million. This is far more conservative than the valuation implied by the company's most recent round of venture capital investment, which puts the company's worth at more than $1 billion.

The future investment stars are already with us. The NYSE Financial Future Challenge, operated by the NYSE Foundation, By Kids for Kids, K12 Inc. and the United Investors Association, is in full swing, with five finalists just identified. To reach this level, the participants had to develop a new product, idea or process that would "excite, educate and motivate their peers" to become interested in the financial marketplace. The eventual winner lurks within this subset and will receive a $2,500 prize -- a great way to get that portfolio started. And, he or she will be feted at a closing bell ceremony at the NYSE (NYX) on January 11, 2010.

The finalists presented a variety of ideas which are sure to generate some buzz. Kelsey Foss, a 12-year-old from Mountainville, NY, proposed a new television show, "Stock Market Tycoon Idol," which would harness the popularity of reality TV while amping up the content. The program would involve the journeys of 10 kids as they seek to make money or lose it, with the possibility of becoming virtual millionaires along the way. The show would be set at a mock NYSE studio on Wall Street, and exports would be brought out to mentor the contestants. The reality TV reach would help engage a younger audience.

Company attitudes toward social media sites vary. Some swing the doors wide open, allowing employees to tend to their Facebook farms and update Twitter statuses throughout the day. Others lock 'em down, keeping non-business site access to a minimum.

A recent study found that, in the United States, 77% of employees with Facebook accounts check in with the community from the office. And, the amount of time they're spending in this part of the online world is growing. In the United Kingdom, another study found that 57% log in regularly from work, costing their employers 40 minutes a day.

Philip Wicks, a consultant at Morse PLC, a technology research firm in London, "It isn't just something you can do for half an hour during a lunch break but all through the day and because of that, it has a huge impact because people aren't necessarily concentrating on what they should be doing during the day." He estimates that this translates to lost productivity of $2.25 billion a year.

It seems like the obvious move would be to block the sites, but William Beers of PricewaterhouseCoopers disagrees. "Instead of trying to shut it down, I think we should try to embrace these technologies, put in a nice policy that governs it and explain to users the risks related to it, provide some training and then see what business benefits we can have from it," he said.

Your e-mail account is a goldmine. Technology companies push hard to keep your data secure, but there are plenty of scumbags out there who always seem to find a new way to gain an edge over the guys in white hats. Phishers, in particular, are eager to find new ways to profit from your identity and information, and they're getting some new tricks.

Phishing scam activity was quiet at the beginning of this year, according to a report in USA Today, but these attacks surged 200% from May through September, says the X-Force team at IBM (NYSE: IBM). Webmail, social media and gaming accounts are their primary targets. E-mail access, in particular, is highly sought after, since they can be use to push out spam ... while bypassing filters.

These "virgin" e-mail accounts command top dollar: a digital criminal can pick up as much as $2 for a clean account from Microsoft (NASDAQ: MSFT) Windows Live, Google (NASDAQ: GOOG) Gmail, Yahoo (NASDAQ: YHOO) YahooMail or AOL (NYSE: TWX). This is more than twice the amount typically paid for a stolen credit card account, according to Fred Rica, principal in the security practice at PricewaterhouseCoopers. Many webmail users actually do half the criminals' job for them, with 33% using just one password online and 48% using only a handful.

Internet giant Google Inc. (NASDAQ: GOOG) sent out invitations to 100,000 developers to come in a test the waters of its newest creation, Google Wave.

Unfortunately, for most of us, since the service is being offered on an invitation only basis, we will have to wait a bit longer to see what Google Wave is all about, but it does seem to offer some really nice features that will probably become very popular with internet users.

Have you ever looked at your Yahoo! (NASDAQ: YHOO) Flickr account and thought, "Why am I doing this? I can just throw my pics up on Facebook"? If this has crossed your mind, you're not alone. In fact, many photo-sharing sites – Snapfish (NYSE: HPQ), Photobucket, Picasa (NASDAQ: GOOG) and Shutterfly, as well as Flickr – are asking the same questions. With the development and enhancement of photo management capabilities in major social networking websites, niche players need to find new ways to stay relevant.

The situation is still far from grim. Fed by traffic from their behemoth owners, the photo-sharing sites remain substantial forces, and they are currently home to more than 20 billion pictures. There's still plenty of interest in these environments ... which has been bolstered by specific features that make the likes of Flickr attractive to both professional photographers and amateur shooters. The ability to order prints and personalize portfolios, for example, still provides an edge over sites like Facebook and MySpace (NYSE: NEWS).

Nonetheless, the threats from the social networking space are quite real.

Social networking sites gained a lot of eyeball-share last year. The time that users spent on sites like Facebook, Twitter and MySpace nearly doubled in the past year, increasing by 83% relative to April 2008. The number of minutes spent on Facebook by its 200 million active members spiked 700% year-over-year to 13.9 billion. The second most popular social networking site, MySpace, saw a 31% fall in minutes spent on the site to 4.97 billion, but ranked number one in video stream consumption.

Blogger, Tagged and Twitter took the third, fourth and fifth spots. In April 2009, the number of tweets unleashed shot up 3,712% from April 2008.

The missing link? Money.

I have ridiculed Starbucks (NASDAQ: SBUX) in the past, but I actually have to give them some props for trying something new. Of course, this newest move is a double-edged sword, but we'll deal with that in a moment.

According to The New York Times, SBUX will display new advertising posters in six major cities and will try "to harness the power of online social networking sites by challenging people to hunt for the posters on Tuesday and be the first to post a photo of one using Twitter."

Mark to market is R.I.P. But that's good news. Sentiment is building in the punditosphere that unemployment has not yet peaked and might not peak until 2010. TechCrunch reports that not a single venture-backed company IPOd in first quarter and M&A transactions were down by half compared to a year ago. Twitter is the next MySpace, according to this post. Too many impostors, follower counting and other sad parallels.

Carol Bartz, the new CEO of Yahoo! Inc. (NASDAQ: YHOO), has no qualms about executive transparency. During an appearance Tuesday at the Morgan Stanley Tech Conference in San Francisco, Bartz confessed that she doesn't use Yahoo's mapping functionality. "I use Google Maps," she admitted. Chief Financial Officer Blake Jorgensen tried to defer the potential PR problem by explaining that Yahoo Maps has been placed on the back burner, since it's so expensive to invest in the product.

Yahoo Maps isn't the only weakness Bartz noted. Though she said it's "very clear" that Yahoo needs to dive into the social networking arena, the CEO floated the idea of a partnership with an existing company, rather than the launch of a brand-new product. "I do not believe we can invent the next Facebook," she explained.

The popular social-networking site Facebook has blossomed into a gathering place for professionals, teenagers and a place where old friends can reunite to catch up on all of life's changes. But apparently "friends" may not be the only ones tracking you down.

An Australian court recently ruled that the site could be used by a lender to serve "virtual" papers to a couple, notifying them that their house would be repossessed for failing to keep up with their mortgage payments.

It's just the latest example of how lenders, colleges and employers are all becoming hip to the social-networking scene and how keeping your profile online for the world to see could actually hurt you in the long run.

There have been several cases of posts on social-networking sites backfiring on individuals -- from students being denied college enrollment or degrees, job seekers missing out on their dream job and even a college football player being kicked off the team -- all because of an inappropriate comment or photo on their profiles.

So before you add your profile, post a message on your friend's wall or update your photo album, you may want to consider how it will reflect on you or just who may find it online.