I’ve been involved in affiliate marketing off and on for about 8 years, and the trend towards disclosure of affiliate links in the blogosphere has been a strange situation for me. It’s not that I want to hide the fact that I’m being compensated, it’s just that if you are an ethical marketer that focuses on providing value, most people don’t really care outside of the Internet marketing world.
I haven’t done much affiliate marketing on Copyblogger, but I hate the use of (aff) following the link. It’s just bad, distracting copy, so I try to find some other way to reveal the affiliation in a way that makes sense. Other times I just give my readers enough credit to know what’s up (such as with links to books).