Some time ago Yahoo acquired Flickr which is the most popular photo-sharing service. What is interesting is that Flickr has built-in support for Creative Commons licenses, enabling anyone to decide on their images how they will be shared. The service has already gathered tens of thousands of freely available images with no copyright lawayers at sight.
Now Yahoo has introduced a Creative Commons search engine, enabling anyone to search the internet for content available in the Creative Commons. Part of the enabling factor is the fact that Creative Commons has introduced a technical concept for embedding the CC licensing information into web pages, enabling the development of such search engines.
Both Flickr CC and Yahoo CC search and remarkable contributions from Yahoo for shared culture. I look forward for Google to take the next step in the realm of Creative Commons.