On other websites, such as Reddit, posts automatically start with 1 upvote (from the user who posted it). Since users are allowed to upvote their own posts, it should be done automatically since most users will probably upvote their posts anyway. I think this would be better than having posts start at 0 and blocking users from upvoting their own posts since having a 0 on websites like Reddit means the post has been downvoted. This might result in users who use those websites wanting to skim past posts that have 0 votes.