Mechanical Turk: Amazon's Mechanical Turk is a resource for doing human-intelligence tasks, or as the site commonly refers to them, HITs. You get paid a very small fee for any given HIT and you'll need a good deal of volume to make a substantial amount of money. But it is a resource you can use in your spare time to generate a small income online.
LinkTrust has been in operation since 2002 and claims to be “the most accurate affiliate tracking software on the market.” And, it may be difficult to argue with that statement. LinkTrust features a customizable interface that allows you to track essentially any sort of advertising online and offline – cookies, pixels, server posts, host,CPA, CPC, Pay-per-call, mobile traffic. You’ll also have access to “a slew of heavy-duty reports,” filter options for traffic, top-notch support and the patented LinkTrust Remote Traffic Agent (RTA).