A fantastic way of making money is metacafe. Metacafe is like youtube, except you get paid for "Producer[original] Content". The amount of money you get paid is based on your views, and I think you need a 1000 or so before you start getting money. If you can make an original, popular video though, it can be definitely worth it!
Check it out:
If you are keen on film, or sharing your thoughts on camera: this may be the website to earn abit of extra cash on the side.:)