Thanks for the great article, Lars. Good explanation there, and I've found my experiences to be similar: One cam program I signed up for I got a "whale" in the first two weeks - but not even close to a 2nd one in over 8 months of promoting them.
On the other hand, another cam program got almost zero signups (although on fairly little traffic) in the first 6 months and then a few a week after that.
After all this, I've found that patience really is important and diversifying where and how you get your traffic. Try different pages, banners, iframes, text links, etc. until you see some good patterns.
Even then, as I saw last month with cams.com, the %visitors/paid sign-ups can vary wildly. P-a-t-i-e-n-c-e.
