Friends don't ask for favors, they exchange them evenly. I have two older friends who've helped me out quite a bit. It has been hard to find what I can do to recipricate! So I pay them, or buy lunch etc.. These are my old fishing buddies. Their stories are the best of all! What I won't ever do is ask for a favor without offering fair compensation!
True friends understand this, the user friends don't. Great sorting tool. Plus think of all the extra time you'll have if he's not hanging around taking you away from your paying customers!