Affiliate Marketing Secrets

How possibly do these websites earn? Advertisements revenues may be good but i dont think they are enough to run a massive website. So how do these websites earn except earning through affiliate marketing?

Hello, I have 2 questions for you :
1. Besides Clickbank, Paydotcom, click2sell, could you tell me some websites that I can earn money by affiliate marketing ?
2. Among these above websites, could you give me some of them that I earn commission via Paypal ?

Essentially, I am looking for micro-communities on the internet, small niche audiences. Specifically for these micro-communities, I `want to find the top website for each community. For instance, for knitting, http://www.knittinghelp.com seems to be the essential resource for this smallish community.

how do i promote my websites on the internet ? can i get affiliates to promote my websites for me ? what is the best way to promote websites all i need is more trafic and sing up to my websites. thank you