From some of the companies I've talked to, the results from advertising on LinkedIn have been fairly strong. Then again, the website is the largest and fastest growing professional network, making it much easier for targeting.

Well, LinkedIn is improving things even more. That is, the company has launched LinkedIn DirectAds. As the name implies, this is a self-service system.

Of course, this may not be the best option for major advertisers that need sophisticated campaigns. But, for small companies, this solution can be ideal (hey, just look at the success of Google AdWords).

And the targeting for DirectAds is highly granular. For example, you can select a myriad of industry categories, such as CPAs, graphic designers, and so on. Or, perhaps you want to focus on sales executives or CEOs? Keep in mind that LinkedIn has 20 million registered users (with extensive profile information on each).

Getting started is easy. The process takes a few minutes and the minimum fee is $25.

Tom Taulli is the author of various books, including The Complete M&A Handbook and The Edgar Online Guide to Decoding Financial Statements. He also operates MergerBook.com.