When you open the site, you're greeted with a window which shows the contents of your online folder. Sign up, and you can upload your files from any computer connected to the net. It's fast, it's simple, and it works.
The total size of your files must not exceed 1 GB, while an individual file can be as large as 50 MB. This pretty much sums up all that can be said about this little service, and I wouldn't want it any other way. I reckon the size limits might increase in the future, but the service is really new - give it time.
What's better, the site doesn't have any ads - it is funded entirely through donations. According to Luke, the site founder, this funding model is so far working well. This doesn't surprise me, because when there aren't annoying 'YOU WON' flashing banners, people probably feel more inclined to click that 'donate' button.