Update: This was reported by WSJ a months ago buried inside a Google-focused story.
Yahoo (NASDAQ: YHOO) has bought Munich-based mobile marketing firm Actionality earlier this month, Mobile Entertainment reports. Financial terms were not available. The move seems intended to shore up Yahoo’s mobile moves, which got a big push earlier this year with the launch of its Yahoo Go app and OneSearch search system. In a less general sense, the acquisition of Munich-based Actionality helps position Yahoo as a mobile ad inventory manager, much like its previous deal to provide such services for Vodafone.  Actionality had seed investment from Doughty Hanson Technology Ventures.

• Yahoo Launches Suite of Mobile Publishing Marketing Services