Mechanical Turk is Amazon's take on micro-jobs. These are small miniscule-jobs that you can do for other people, which they call HITs, or Human Intelligence Tasks. These are super simple tasks that anyone can do. Some examples are listing off some URLs with certain kinds of images for one cent, or recording a few phrases with a microphone for 6 cents.
If you want to separate your personal liability from your company's liability, you may want to consider forming one of several types of corporations. This makes a business a separate entity apart from its owners, and, therefore, corporations can own property, assume liability, pay taxes, enter into contracts, sue and be sued like any other individual. One of the most common structures for small businesses, however, is the limited liability corporation (LLC). This hybrid structure has the legal protections of a corporation while allowing for the tax benefits of a partnership.
Often, what happens is that we run into unscrupulous Internet Marketers (IMs) who have less-than altruistic intentions of extracting money from you rather than helping you to make it. However, this isn't something new. People have been falling for networking marketing, pyramid schemes, and affiliate marketing scams since before the start of the net.