I think you are confusing the auto voter and the upvote. Auto voter is when people set their votes to automatically go out to someone without regard to reading or participating/engaging upon what was posted. Can people set their auto voter to upvote themselves? I do not know nor have come across any mention of such a tactic so far. Ultimately though it wouldn't surprise me if such could happen. (lol) Upvoting one's post usually (from what I understand) is done similarly to how people upvote others post manually either by hitting the upvote tab and/or if they have their slide bar they can set a percentage of their vote to go to any particular vote including to themselves.