I just started getting some good click and it comes and goes with about the same traffic. Is there anyway to tell which ads are getting clicks and which aren't?
well.. i use addfreestat.com and they provide stat for exit page for adsense click. or you could search with this keyword "free adsense tracker"
DP has it all http://www.digitalpoint.com/~shawn/2005/11/track-adsense-clicks-with-google-analytics.html
Sign up for Google's Analytics. Unfortunately you'll have to wait to be "invited", which takes about a month or so. They usually send out the invitations in bunches about once per month.