Video sharing site VideoEgg has shifted tactics to become at least the fourth company to act as an ad network for Facebook applications, reports TechCrunch.

VideoEgg operates as a tool for the self-publishing of videos, monetizing those videos through ads, since its founding in 2005. Now it is positioning itself as a way to monetize Facebook applications.

Builders of Facebook applications can opt in to the EggNetwork program and have ads inserted in those applications. Small ads expand when users mouse over them to show a video or other interactive content.

EggNetwork takes 40 percent of the revenue from these ads, with the remaining 60 percent going to the creator. Ads are delivered based on demographic targeting.

Facebook is in the midst of deciding how much information should be made available to ad networks for this kind of targeting process.