clickz Apple is closing its Quattro mobile ad network to focus on the iAd, while Millennial is reportedly in acquisition talks with handset manufacturer RIM.
Google is in talks with makers of popular online games in an effort to develop a social-networking service to compete with Facebook, according to a report.
Location-based social network Foursquare is reportedly in talks with major companies in the search space, including giants such as Google, Microsoft and Yahoo.