Yahoo patents granted on 06 December 2011

4 US patents granted on 06 December 2011 and assigned to Yahoo

1 8,073,953 Mapless global server load balancing of network traffic using anycast routing
2 8,073,877 Scalable semi-structured named entity detection
3 8,073,803 Method for matching electronic advertisements to surrounding context based on their advertisement content
4 8,073,794 Social behavior analysis and inferring social networks for a recommendation system