Could you add compatibility with google anaylitics? Just need a way to add javascript to the the code (per ad or per group) in this format:
<a href="http://www.advertisersite.com" onClick="javascript: pageTracker._trackPageview
('/bannerads/advertisername/bannername');">
the '/bannerads/advertisername/bannername' would need to be an option in admin so we can name them appropriately.
For more information:
http://www.google.com/support/analytics/bin/answer.py?hl=en&answer=55526