Yahoo patent applications published on 17 March 2011

3 US patent applications published on 17 March 2011 and assigned to Yahoo

1 20110066725 SOCIAL NEWS RANKING USING GOSSIP DISTANCE
2 20110066618 QUERY TERM RELATIONSHIP CHARACTERIZATION FOR QUERY RESPONSE DETERMINATION
3 20110066495 SYSTEM AND METHOD FOR CUSTOMIZING ADS IN WEB AND MOBILE APPLICATIONS