Yahoo patents granted on 24 May 2011

9 US patents granted on 24 May 2011 and assigned to Yahoo

1 7,950,047 Reporting on spoofed e-mail
2 7,949,724 Determining attention data using DNS information
3 7,949,672 Identifying regional sensitive queries in web search
4 7,949,661 System and method for identifying web communities from seed sets of web pages
5 7,949,647 Navigation assistance for search engines
6 7,949,643 Method and apparatus for rating user generated content in search results
7 7,949,622 System and method for generating a classifier model for classifying web content
8 7,949,563 System and method for collection of advertising usage information
9 7,949,562 System and method for optimizing advertisement campaigns using a limited budget