I have to modify my former post (about <a href="
http://www.sendspace.com/invite/0t3jyz">
SendSpace</a>)!
As for now, I MUST say that <a href="
http://www.divshare.com/profile/arturo">
Divshare</a> is the best by far, they are adding new features on nearly a daily basis!
The most important feature:
your files stay online FOREVER!!! There's NO need to regularly download them every x- days! :D
You can even create <a href="
http://ebookreseller.divshare.com/">
Groups</a>, embed all you files in other websites and stuff like that!
It is still (and will remain forever) free, but now there's an option to upgrade to a paid membership, too.
I left <a href="
http://www.sendspace.com/invite/0t3jyz">
SendSpace</a> behind & changed 100% to <a href="
http://ebookreseller.divshare.com/">
Divshare</a>!
Check it out folks, it's worth!