Some affiliate programs are one-tier: you get paid commission only on those customers who you personally refer. However, some are two-tier: if one of those customers goes on to also join the site’s affiliate program, then you get a smaller commission on sales referred by them as well.
If you refer someone who then goes on [...]

Using Forums To Increase Traffic
You can find forums all over the Web with a focus on almost any niche subject you can think up. By far, the Internet Marketing, “Make Money At Home” subject is the most popular forum focus today and probably for more than several thousand tomorrows, too.
It is easy to find forums [...]