AOL has been busy lately, building on their renewed focus on a business model built around online advertising with social media to boot.

First up, AOL is shedding Tacoda and folding it into Ad.com, part of Platform-A, AOL's ad division. The division recently began integrating Tacoda's behavioral targeting across its network.

Platform-A is also opening up its mobile ads to third parties. Third Screen Media, Platform-A's mobile ad provider, will offer mobile publishers the opportunity to access multiple ad networks for monetizing their advertising inventory, letting them fill more of their available inventory and create additional revenue streams.

Finally, TechCrunch is reporting that AOL has bought FriendFeed competitor, SocialThing, which is still in private beta. This seems to be another move by AOL to play in the social media space. Earlier this year, AOL bought social network Bebo for $850 million.