What are your AdWords Ratios?
LoneCoder: Be patient and keep at it.  Sometimes a campaign will run for weeks before it will find a good spot and come alive.My CTR's are between 0.5% and 1% on the content network (which is a totally different market from search).In my case the CTR is directly proportionate to the number of times I can use the word "free" in the ad.  Sometimes changing just a single word can double the CTR.