arran - 6:50 pm on Jan 20, 2006 (gmt 0) arran.
Use an out.php type script to issue a 301 and exclude out.php in robots.txt. Doesn't "leak PR" and more importantly hides your affiliate links. I'm not sure why you're worried about having outbound links - isn't that what the internet's all about? If I were a search engine, I would take a long, hard look at a site with no outbounds.