So, I am not at all for spam comments ever. I hate that. Just don't comment - however, I feel that not allowing people to vote for themselves is really not something that should be regulated. He should just comment on his own posts with his spam and vote there then. But I can't say that there's something wrong with voting for oneself. I don't do it much, except for my own posts, but have only upvoted one of my own comments - cause I thought I was hilarious. Haha.