If you are a smartphone user you probably install and play around with new apps from time to time, and I bet you wouldn't mind making some money to test and review those apps, right?
On the other hand, if you are a mobile developer you probably have a hard time finding users to test your apps and provide feedback just after launching them, right?
Recently I came across a company that is trying to bridge the gap between those two cases. It's called AppRush.com, and it works as a platform connecting mobile developers with users.
As a developer you can order two types of reviews: a brief review inside Google Play, or a detailed review where the users will fill out a questionnaire with questions you'll prepare. The Google Play reviews cost $3 each, and the detailed reviews $5, so it's pretty affordable.
Users who install the apps and provide feedback via the reviews earn some money while doing it. In other words, it's a win-win situation.
If you have an Android phone or an iPhone you can signup completely free here. The company is even offering a $5 signup bonus at the moment, so check it out.