I've convinced a few of my friends to read my comic, but most of them are silent readers apart from the occasional "Oh, I really liked your last page, by the way!"
I have one friend who does get excited ("HE'S CUTE!", "Those eyebrows though!!") but I don't know if that's just because she gets excited about a lot of things or that she actually does have a particular interest in them. :') I get pretty excited by them though, so that's good enough for me. B)