We are looking for a joomla 1.5 advertising component that will allow us to:

-ads related to content not via meta tags but it will have to scan content and match ads (homepage ads random)
-ad program must be able to track impressions and clicks
-ad links need to be rel="nofollow links"
-when we have multiple ads up on a page the ads must be able to be sync'ed so they are the same ad. (but not all the time we must have option to choose)
-track CTR (click through rate)
-track clients
-limit impressions