I wrote an article about this awhile ago here. I dont see the problem with upvoting your own posts - as long as they are good quality! I think this is a way to increase your posts visibility.
What I really i hate and see a lot of here is when people with lots of SP comment something like 'nice post' and then upvote their comment. All that does is make them richer and also brings their comment up nearer the top of the comments and pushes down potentially more valuable comments
Yes! You can see exactly what I am talking about. You hit the nail on the head here.
Glad we agree :)