I've got mainstream, what do you think?

how about where to sell the stuff like copper and so on. maybe even add a forum script for people to advertise their services and for people looking to sell or get rid of stuff. make an easy place for them to find each other. Then maybe start by doing just your city for where to go to do donations ( sperm or eggs) and so on and then expand state wide, then do another state, and ect. What about selling used text books on amazon. they can get more than the college book store will offer them.

Just some ideas i throwing around. depends how much you really want to put into it. Otherwise maybe try passing the link around on facebook or posting it on College bulletin boards.