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.

Venture capital funds found 612 companies in which to invest $3.67 billion in Q2. Of this, $1.5 billion (41%) was first-time financing, according to a report by PricewaterhouseCoopers and the National Venture Capital Association. This is only slightly ahead of the action in Q1, in which 141 transactions were first-time, and far behind the pace we enjoyed earlier this decade.

The biotech sector was the big winner in a shrinking market, with funding up 54% to $888 million over 85 deals. The software business was flat quarter-over-quarter at 4644 million over 135 transactions. Investments in internet companies fell 15% to $524 million via 124 deals. Clean technology showed considerable growth, up 15% to $274 million, with 42 transactions closed.

PricewaterhouseCoopers LLC and Deloite & Touche LLP had a ring side seat to the collapse of Freddie Mac (NYSE:FRE) and Fannie Mae (NYSE: FNM) which may cost taxpayers hundreds of billions of dollars. The two auditing firms have some serious explaining to do to taxpayers and members of Congress.

According to the New York Times, advisers to the U.S. Treasury Department found that Freddie's accounting methods overstated its financial cushion.

"The company had made decisions that, while not necessarily in violation of accounting rules, had the effect of overstating the firm's capital resources and financial stability," the paper said. "Indeed, one person briefed on the company's finances said Freddie Mac had made accounting decisions that pushed losses into the future and postponed a capital shortfall until the fourth quarter of this yearwhich would not need to be disclosed until early 2009." Fannie Mae used the same methods, though, apparently not as aggressively as Freddie Mac.

A spokesman for Freddie Mac's auditors, Pricewaterhouse, did not immediately return an email seeking comment. In its letter to shareholders filed with the 2007 annual report report, PwC noted that Freddie Mac had changed some accounting policies. It elected to offset the amounts of some derivative contracts as of October 1; elected to measure newly acquired interests in securitized financial assets that contain embedded derivatives at fair value as of January 1, 2007; changed its method for accounting for uncertainty in income taxes as of January 1; changed the method for accounting for defined benefits plans as of December 31, 2006, changed its method for determining gains and losses on sales of certain guaranteed securities as of October 1, 2005

That's quite a bit to keep track of, no? I am sure Congressional investigators will want more detail about why these policies were changed.

Fannie Mae, whose former chief executive Franklin Raines was ousted in 2004 following another accounting scandal, paid Deloitte $49.3 million in fees in 2007. The firm was hired by Fannie Mae in 2005 because its predecessor KPMG missed accounting errors that cost the housing finance company $9 billion in previously reported profit. A Deloitte spokesman declined to comment.

Chief Executive Daniel Mudd told investors following weaker-than-expected first quarter results that this year and next year would beg "tough." Little did he know that those words would foreshadow his ouster along with his counterpart at Freddie Mac Richard Syron. They no doubt will be getting a pretty fat golden parachutte. Both companies have lost a combined $14 billion over the past year.

If the auditors were not as diligent with Freddie and Fannie as they should have been, then members of Congress needs to hold them accountable. The shareholders who have been wiped out by the government's rescue deserve to know if auditors missed signs of the collapse that they should have caught.

Everybody knows China is the world's biggest factory for blue jeans, sneakers, TVs and cell phones. Soon it could be the world's biggest generator of IPOs. Chinese entrepreneurs are turning wealth made in manufacturing into new companies, and China already rivals the U.S. and Japan for spending on research and development. Those investments in R&D are leading to new companies in biotech and computer tech. A huge number of China Inc. startups are picking the Shanghai or Shenzhen markets to take their companies public. They're racing to go public to take advantage of the booming domestic market -- the main Shanghai index has tripled since 2005. Capital raised by new listings in China is set to exceed $52 billion this year, putting the mainland on track to become the world's leading center for public offerings this year, according to the Financial Times.

The popularity of local stock markets for new offerings has exchange managers in Hong Kong, London and New York nervous that they'll no longer benefit from hosting Chinese IPOs. According to Richard Sun, a partner with PwC quoted in the Financial Times article, capital raised by A-share listings in Shenzhen and Shanghai will reach Rmb400 billion ($52.6 billion) this year. That prediction is double a January forecast by PwC. The consulting firm reports that the value of Chinese A-share listings reached Rmb169 billion in the first six months of 2007. It sees an even stronger market for the second half of the year.

Can anybody get in on the deals? Not easily. Mainland A-shares are traded in renminbi and are open only to local Chinese and designated foreign institutions. Most non-Chinese investment firms are locked out of underwriting and trading local stocks. The exceptions are Goldman Sachs Group (NYSE: GS) and UBS (NYSE: UBS). Beijing has given both the go-ahead to participate in mainland IPOs. Meanwhile, Washington is lobbying China to ease restrictions.