Zumo Drive - is another sync and sharing service with similar features to Sugarsync and Dropbox. I use this also. A great feature is being able to stream music from Zumo Drive to your mobile device. In fact, you can stream and access different types of files. You can use this to access your files on any device. I have linked folders on my main laptop at home and can access them on my netbook, Palm Pre+, and school computer. Easy to use also.
There is a free 2GB version. Zumo Drive actually works and looks like another drive on your computer. 25 GB is $6.99 / month.