Carbonite seemed too good to be true to me. They advertise that they will store any amount of data for you for just $49 a year. It is mainly a backup system rather than an online file-system but unlimited storage at that price is incredible. They do note that you are limited to uploading 2gb per-day (15gb per-day down) so you can’t murder their system if you have a huge pipe.
Thinking I might have missed some fine print I emailed them and asked if I could backup my 350gb of photos and music to their service. A few hours later and I had their reply; yes, no problem, go for it. The only small catch is that after your first 50gb is uploaded they start limiting your upload rate. Not sure how much and I guess I will find out “soon” enough. “Soon” because 50gb is going to take awhile to reach.
The only wrinke in the Caronite solution for me is that it is Windows only. No Mac or Linux version yet.