Completing paid surveys is one of the most popular ways to earn extra cash online. There are entire websites devoted to nothing but surveys that you can register with and be paired with surveys that best fit your profile. You will get paid according to the terms listed at the beginning of the survey and will have the chance to add some extra money to your wallet. When taking surveys, it is important to be honest and take them seriously because you can be banned from the site the researchers determined you did not put any effort into your answers.
eBay is the most popular global auction site around and is a great place to sell items you no longer want. If you are looking to earn some extra cash, start out by looking around your house for things you no longer want; list them on eBay and watch as customers bid on them. You can also purchase clearance sale items and thrift store finds and make a couple dollars profit by listing them as well. The key to selling on eBay is to do your research and find out what the hot items are.