1) Change your search engine.
If you spend a lot of time online switch your search engine to Bing. You can earn credits through Bing rewards every time you make a search. You can then exchange those credits in gift cards to a variety of stores like Amazon and Starbucks.
2) Download Paying Apps.
There are a number of companies that will pay you to install their app on your cell and they will pay you every month to keep them installed. Those apps collect important data on your mobile usage.
* Nielsen Mobile Panels for iPads - $50/year to keep their app on your phone
*Google screenwise Panel - $8 cash rewards seven days after you sign up and $2 every week after that. Those cash rewards can be redeemed in the form of gift cards
*MobileExpressions - For Android phones. After the first week, you get to play an instant rewards game for a prize. Everyone wins something.
3) Sell your Junk Mail
SBK Center will accept your junk email and in return will give you prepaid Visa Cards.
4) Use You Grocery Receipts for Rebates
Rebate Apps will give you a cash rebate on your grocery store purchases if you take a picture of your receipt with your phone. Ibotta and Checkout51 are two popular ones.
5) Sell Your Old Books
You could have a garage sale, but that's too much work. Try Bookscouter app to find out what you can sell your book for. Find the company offering the most cash, fill out some info, and get ready to ship the book. Most the buyback companies even offer prepaid shipping labels.
6) Test Websites
Ever find a website confusion or hard to navigate? A company called User Testing will take your critique and pay you for it. You will download software and when tasks are available, look over a website while your mouse movements, clicks, keystrokes and spoken comments are all recorded as video. You could make up to $30 an hour.
7) Watch More Television
There's a new company called "RewardTV" that pays you to answer trivia questions about last night's TV shows. You'll make an extra $15-20 bucks a month doing something you were would normally do anyway.
8) Sell You Smartphone Photos
If you have a photogenic eye and take a ton of pictures with your phone, this is an incredibly easy way to make some extra dough. An app called Foap takes your high quality photo to its market place where some one can license the photo and you make about half. For example, one photo license could be $10 and you make $5. Have a great photo and this could be done multiple times!
Like these or have others, please comment!