Full length or EP is not going to matter once you put it up on iTunes, or Amazon where people can download only 1 song if they choose.
I think for my next effort I'm going to make a full length album as one long MP3. That way people are forced to download the whole thing. Sure, somebody is going to chop it up and trash most of it, but at least they had to listen through the whole thing to figure out which tunes they like.
