For a professional network, it makes perfect sense to bring ads that target a particular profile. LinkedIN is setting out to do just that with the launch of its DirectAds Targeted advertising program.

An excerpt from SearchEngineJournal

LinkedIn DirectAds is a grownup and more professional version of Facebook Ads, with a CPM (cost per impression) model instead of the cost per click. Given LinkedIn's dominance of being a career related social network, and the amount of recruiters who already use LinkedIn to build relationships of aggressively headhunt, expect ads to be very direct and targeted, and recruitment or team building firms to take full advantage.

The details of the program are:

Limit your ads to people based on location
Target people based on position, age, salary, industry.
Easy sign-up for just $25

The program should add more value to LinkedIN and perhaps it would be looking to set itself free from dependence on other ad networks such as Google's AdSense.