Check Points is a great app for earning rewards. You check-in places like Four Square, you scan bar codes, and try new apps (games mostly) all for gift cards to Amazon.com, iTunes, Best Buy, Home Depot, and they even have airline miles. http://www.checkpoints.com then use the code stuart318 when you register for extra points
I found a new web app for iOs and Android called Feature Points. It's great, all you do is download free apps, some of which are actually good apps) and get point for opening them for 30 seconds, I easily earned 1000 points in my first day and there is no shortage of apps to download. The first one called 'flick points' gives you 4 points for each 30 second video you watch and they link together. Use the code below for a 50 point head start!