Yahoo patents granted on 05 February 2013

6 US patents granted on 05 February 2013 and assigned to Yahoo

1 8,370,522 Performing multicast communication in computer networks by using overlay routing
2 8,370,486 Social news ranking using gossip distance
3 8,370,439 Activating automatic messaging session
4 8,370,349 Instant contact searching and presentation by category
5 8,370,286 System for personalized term expansion and recommendation
6 8,369,327 Application interface for global message delivery