Yahoo BOSS's terms do not require attribution though: http://developer.yahoo.com/search/boss/ http://developer.yahoo.com/search/boss/ . I don't think most users

Yahoo BOSS's terms do not require attribution though: http://developer.yahoo.com/search/boss/ http://developer.yahoo.com/search/boss/ . I don't think most users would care as much either; we hackers care a lot coz we're baffled with "how in the world did this one guy do this?!". (Even with BOSS being used for some results, this is still very impressive.) Although it might help the service get more credibility by mentioning that Yahoo results are also used.