This new site called Pixlr lets you do a lot of basic but useful things to your photos. The interface is very much like Photoshop, but it’s a Flash application that runs in your browser, and it’s free.  Most of this stuff you can do in any old image editor, but check it out,  it might prove useful for quick edits and resizing. Also, check out the art poster filter – Filter>Art Poster,  it’s worth it for that alone. Oh, and the interface is very clean.

http://www.pixlr.com