I just came across this post by Perry Marshall, author of several leading books on Google Adwords. Like many of you, I have some affiliate links on my web pages. Toward the end of last week, I was seeing a significant drop in viewers. I wondered why this was happening until I saw this post on Perry Marshall’s blog.
Apparently Google now checks for affiliate links on your landing pages. When it finds affiliate links, it downgrades the rank for that page significantly.
For the moment, ‘PHP redirects’ are a good way to circumvent the problem. However, it is clear that Google is specifically targeting affiliate review sites. The best solution for the long term is not to have affiliate links on landing pages for which you want a good ranking.