I wanted to track how many clicks a link on my site was getting, and found a handy phpcript that did just that. It replaced the link, say, www.mysite.com/link with www.mysite.com/phplink.php?id=20 Now, my first thought is this won't pass PR will it? Or is google smarter then that, can it see redirects?
It should be alright to use redirects, its probably better if you use a tracker on the exact site that records the referrer to a database.