Six months ago we noted that one could use Yahoo! link: searches to find Creative Commons licensed content out of 4.7 million indexed pages that linked to a Creative Commons license at that time.

Last month we mentioned that the Yahoo! search index contained over 10 million pages that link to a Creative Commons license.

Now we’re very happy that Yahoo! has built a Creative Commons search interface. As with our own search engine, you can limit results to works you can use commercially or that you can build upon or both.

We’ve added a box to our search engine’s results page that allows you to easily try a similar search at Yahoo! — try out this search for ‘shark’.

For developers, Yahoo! has added a license parameter to their Web Search API.

Read more on the Yahoo! Search blog, where the announcement of Yahoo! Search for Creative Commons features an inspiring guest post from Creative Commons chairperson Lawrence Lessig.

Way to go Yahoo!

(Now close to 14 million pages linking to a CC license.)