Cheating is everywhere in business. You just need to be alert to stay away of it. But still, in some cases you have to rely with unknown person. When I do any project I always took 50% advance to for security. Then after completion of the work I took rest 50% of money. If any problem came, in between work, then both should loss 50%.
When I work with any PTC (paid per visit website) I wait till my money became mature and I claim. If they don’t pay me then I stopped working with them. Here still I loss the money which became mature.
As an article writer, I wrote sample or first task to the work owner. If they pay, then I will work more according to their instruction. Otherwise, I should stop working for them.