I figure out the best way to go about not getting yourself screwed, is like dude said if you sell a beat and they make it big, then your really loosing your ass in the long run. I found the best way is to donate services to the artist but write a contract. stating if they do sign a label you get pension due. I am doing this for an artist right now, for 6 tracks for his cd and if he signs a deal I get x% or x$ and if he signs a single I also get x% and x$ so thats one thing I found worked I think it might be good to find labels sometimes they like to buy beats from other people for there artist I'm new in this field and am researching it all.