There are several types of affiliate programs. Most will pay you a flat rate or percentage of the sale you make (pay-per-sale). Another common type is when you're paid per action or lead. For example, if you refer someone who signs up for businesses free trial, the business pays you for the sign-up. Although not seen as often anymore, some will pay you per click (this is seen most in contextual ad programs such as Google Adsense) or per impression (each time the ad is loaded on your website).
In my experience, a lot of people are more open about sharing traffic stats then you would think. You see this not just in interviews but if you peruse through the archived articles on a blog, there’s a good chance you’ll stumble upon a “blog in review” or “traffic report” post. With those stats, you can start to figure out how much traffic the site is getting today.
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).