12. Achievemint
If you own a Fitbit or other activity tracker, this one will be easy! Get points for every active or healthy task you do, and cash in at the end for cash rewards. This site has paid out over $50,000 to date! You even get points for sleeping, tracking food, and taking optional surveys.
How much can you make?
Get $10 just for signing up. After that, each step gets you closer to the 10,000 points needed to get another $10.
Get active to make extra money by signing up with Achievemint.