Free online backup program

Once I find a new job I plan on buying a new computer shortly thereafter, allowing me to convert my current computer into my backup external hard drive. Until that time I am stuck debating about how to best back up my information without spending a bunch of money. A few days ago I found a program named Dropbox that offers 2GB of free online storage and syncs your information automatically. I currently have Dropbox syncing my pictures, documents, and desktop and still have quite a large percentage of my space remaining. Oh, and Dropbox syncs across different platforms and multiple computers. Also, you can access it via the online interface if you are on an unlinked computer.

There are a two major drawbacks:

1. Space- 2GB really is not that much space. For $100 per year you can have 50GB, but I think if I were paying that much I would expect significantly more storage space and would end up looking for a different program.
   
2. Currently the program only backs up files that you actually move to the Dropbox folder on your hard drive. There was no way in hell I was rearranging my file structure for this so I looked for a workaround. What I found is that by using symbolic links you can trick Dropbox into syncing other folders and files. The Dropbox Wiki has a writeup of how to sync folders and files outside of the Dropbox folder using symbolic links. Mac users should check out the section "OS X Specific: Automator," which provides a very simple way of doing this. If you are on a PC I wish you luck in your efforts to make this happen.