[Robadob]

I'm upto 18.9gb permanently free on my Dropbox account. They periodically do promotions that give you permanent space. After using Dropbox for 5-6 years I'm still only using 62% of that space. For just storing documents, code and the odd file I'm sharing with people I've had no issue with the space available.

Last year there was the 'great space race' where they were promoting to students, I think I got 8gb for that. (https://www.dropbox.com/help/390/en)

Before that there was a beta for testing out their new photo system. Which gave a max of 5gb free. (It appears this is still available to give you upto 3gb https://www.dropbox.com/help/287/en)