I know n!Fuze is the SW product for this, but it just cost too much.  So my question is...any good feedback on some collaboration website that are easy to use and free or cheap for some simple file uploads? 

So far I have found a few.  TeamPlatform and Sunglasses IO offer a few Gb's of space for free..  Is there any other good ones I'm missing out there that's worth looking at?