Why not limiting it to the person's voting power? I admit I'm a compulsive reblogger, but I only reblog what I vote. If I don't read the article (or like it), I don't vote it either. That being said, I try to vote daily until I got around 87% of my voting power, and I will do it again when it goes up. In that regard, the reblog reward could only work around 5 or 6 reblogs per day. I don't know if I'm being too simple in here. Great project, though!