Figured i would share a small piece of info that i just realized. If you are using google analytics.. make sure to add in the additional code to collect demographics. I have an adult site and i was pretty confident that my main target audience was a young crowd. I looked inside of the demographics in GA and found to my surprise... 55-64 year olds were 40% of my traffic. News/Weather was their top interest and Celebrity news was the second. I know the interest categories are super broad... but this info could help point you in the right direction on what kinds of offers to use.... its like free research.