Yahoo patents granted on 01 March 2011

5 US patents granted on 01 March 2011 and assigned to Yahoo

1 7,900,145 System and method for synchronizing data
2 7,899,815 Apparatus and methods for providing search benchmarks
3 7,899,808 Text enhancement mechanism
4 7,899,807 System and method for crawl ordering by search impact
5 7,899,804 Automatic extraction of semantics from text information