The title of this one kind of gives away the content - Highest Paying Affiliate Programs - but there is some good general background to the subject.

Affiliate marketing often gets a bad press - but it has been a useful method of marketing since long before the Internet was even thought of, here's some of its the advantages Let Affiliates Pave The Way Into New Markets.

Another article which gives a good idea of the enironment in which affiliates operate is UK vs US affiliates: Similarities and differences.