I get sent quite a few and I don't mind how many trax I get as long as they are on CD and I do think most people prefer that format then at least you can play them in the car as well as everywhere else unlike DAT.
I also think it makes a differance when you make a effort on tha CD case i.e. write track titles and track length, I get some with a blank CD & case and just a email address and that makes me think if you can't be bothered to write the titles etc then why should I bother to play it.

P.