"If I vote on 2-3 posts per day there will be fewer and bigger winners."
@steemed I agree that is a problem. Those with the most voting power probably don't have as much time to review posts but another way of looking at would be to say that it reduces the net effect of whales on the system. On the other hand like you suggest it could slow down distribution.
Anyway I don't see an easy solution so whilst I don't agree with the use of bots I can sympathise with why you do it.