Your thoughts have a price. Thanks to QuickThoughts for Android smartphones and tablets you can make some extra money very easily: just offer your opinion.
Buy on Amazon, but without paying.
How does it work?
This application has over 1,000 surveys available to be carried out by its users. Short questionnaires that you can complete in a matter of minutes and that will reward you with up to 3 Euros. Sounds good, doesn't it?
You can build up your balance and when you get to 10 Euros you can exchange them for an Amazon gift card.
Now that you know, buy books, movies and gadgets from Amazon and simply pay them with your opinion. Even if nobody asked.