Very cool little app I just started using for work.

It's basically an online backup program (you can get 2GB for free), but what makes it really cool is that it operates in real time, backing up your files each time you edit and save them. It's not a bandwidth hog either, because it doesn't upload the entire file with each save, only those portions which have changed, making it very fast.

But the really cool thing about it is that you can have multiple machines using the same Dropbox. So I'm working on my files at work, and while I'm doign that, they are not only uploading to the internet backup, they are also simultaneously downloading to my home computer and creating backups there. I go home and work on my files there, and they are automatically updated on my work machine.

Highly recommended. I'm sure a lot of other uses could be imagined as well.

https://www.dropbox.com/