i think its adult or por* memberships.. college going young males are fresh blood.. and yet to discover the life and excitement awaiting for their soul mates or sweet 16 girls to make friends chat or have fun with.. the best thing to sell them is excitement and pleasure .. and you know only thing in this world give that are girls.. rest of the world is crap.. sell them dating and webcam member ship sites with hot girls.. but be sure u give the age verification system in ur sites.. so under 18 can be warned.. after they finish their graduation.. and enter the challanging practical world of money making(a curse!).. they might remember those memories of college and fun with ur sites.. so u r selling them dreams.. that last..
You can try to get them to join my new social network. I'll pay you per sign up. PM me if interested.