i don't see anything wrong with it. When i make a post i already know who is about to upvote and that is because the majority don't upvote-search manually and the interface isn't helping too.
Thus why i shouldn't upvote a post i took hours too write?
If i don't appreciate myself and the time i spent with at least my 10 cents worth of upvote who will do?
On the other hand though if someone only upvotes his stuff that are single pictures or copy/paste things then i am against it. I really don't even care if he upvotes himself with 100$, in my opinion all he has to do is at the same time to support projects or cast some upvotes to other users too!