not sure if this is where this goes and did a quick search and didn't see it yet.
you can get up to 5GB of Dropbox space free. i have done it for two accounts and it has worked well.
(keep in mind this is uploading lots of data and will generally take quite a bit of time and voip applications, etc could be greatly affected)

article/how-to:
http://www.techspot.com/news/47317-d...eta-users.html

here is the most recent beta forum link:
http://forums.dropbox.com/topic.php?...4&replies=1826