I have always been asked this question and when I started in the "biz" about 9 years ago 3.0% to 4.0% was considered great. I have managed to stay around the 2.75% to 2.90% range. What are you guys doing and what are your thoughts on the subject?
I agree, depends on the industry. Some people in adult consider .50% to be good. Back in the day I had 6-8% adsense CTR, but those days are gone. Sometimes with ePN my CTR can be 3-4%, it just depends on the type of traffic and the market.