kidlinux writes "Yahoo started offering a beta version of its toolbar for the open source browser Firefox on Microsoft Windows on Wednesday, with versions for Linux and MacOS X following 'shortly.' I think it's safe to say most people use Google in their Firefox toolbar search field. Yahoo probably wants to get their foot in the door before it's too late. It would be interesting if this was a result of user demand. And apparently this follows Amazon's Firefox toolbar, which actually is a result of user demand."