Where exactly do Yahoo’s revenues come from? Other than pop-up and partner advertizing, I’m not sure? I, nor nobody I know has ever written a check to Yahoo.
http://parand.com/say/index.php/2006/02/03/how-yahoo-and-google-make-money/
http://smallbusiness.yahoo.com/webhosting/
Flickr
Babel Fish
Yahoo! 360° Plus Vietnam
Other sites
http://en.wikipedia.org/wiki/List_of_Yahoo!-owned_sites_and_services