Dropbox lets you put your important files in a folder on your computer and those files will be automatically backed up and synced with all other computers you share the dropbox folder with. The free account permits up to 2 gb of storage, paid accounts allow higher storage levels.

The free account works great for important files, like your Keepass wallet and things like tax returns or other important documents. The service works seamlessly in the background and supports Windows, Mac, iPad and Linux! Recommended.

File Shredder is a handy and free utility you can use to both wipe the free portions of your drive and permanently wipe individual files. Comes in real handy when you are cleaning up a computer to give to someone else (gets rid of any personally identifying information or sensitive things like passwords and logins).

Cool browser add-in that comes in really really handy, particularly in keeping bookmarks sync’d between multiple computers, like your desktop and laptop.

Xmarks is free and works with IE, Safari, and Firefox. No reason not to give it a try, you’ll like it.