Yahoo! Desktop Search

http://desktop.yahoo.com/

LOL I have no idea how long Yahoo!'s desktop search has been around for, but I found it today when I ended up at a 404 on Yahoo's website.

I don't think I'll bother trying it out, but its feature list looks quite nice, especially with off-the-cuff support for hundreds of file types. Leave me a comment if you think it is worth using. (I'm currently a user of Google Desktop Search 2 and love the side bar, so you'd have to convince me.)