Where do you point domains you aren't using?
 

To see how many hits they get, etc etc, maybe get a few bucks a month from traffic

what's the best place yo?

I like sedo.com

To the site of mine most relevent since we usually only buy domains for niches we're already involved in.

I like SedoPRO

I use a PHP program to record where the hit came from and the sponsor site URL for the appropriate niche that I am going to send it to using header("Location: $new_url");

To other domains I own...

ADG Webmaster

default server not found

Just put store them at www.domainmanager.com and forward them to a matching niche affiliate link and monitor the traffic and results.

ditto... though considering making a adwords page just to see what it does

Yo bdjuf with your 8000 domains, toss up a blog, pull down 1 relevant feed and let them all get PR / traffic.