Are you worried about the security of the data you store on your PC? If so, start using Syncplicity and you'll always have a synchronized backup copy to hand.
Syncplicity is an online free storage service which includes a 2 GB virtual hard drive where you can keep a copy of all your important files (with a maximum size of 300 MB each, that is). This copy is updated in real time, meaning that if you change the contents of the folder on your local PC, these changes will be immediately synced with the Syncplicity virtual drive.
What I liked most about Syncplicity was its ease of use. The program can be configured in a couple of minutes, just by following the step-by-step wizard that runs the first time you launch it. Plus, you can set up Syncplicity to use with Facebook, Scribd and Google Docs.
On the downside, I missed having a built-in file manager, and therefore being able to check my synced files without having to open the web browser. Also, I found Syncplicity quite slow: it took me about an hour to sync a hundred photos, and my connection is not precisely a slow one. Oh well, I guess the trick is to leave the program working in the background and move on to something else.
If you're worried about the security of your files, keep them backed up and synced in real time with Syncplicity, an online storage tool with 2 GB of free space.