I'm really sorry, but I don't exactly do that kind of thing...
When I do that, or something similar, I feel that I haven't earned that person's respect or notice, and that it's just an empty transaction. The point of having followers for me is the nice feeling you get, knowing that someone out there cares.
I was kind of dreading this conversation, because another reason why I go to people's profiles, other than to thank them, is to check out what exactly drew them to me. I'm sure you're a great writer, and I mean no disrespect, both to you and to people who DO follow back, but please don't ask me to do this. I really feel that it compromises both of our sets of principles, and neither of us achieve our end-goals.