<p>Serial voting is the act of casting many successive upvotes or downvotes on the posts of a specific user.  Such voting is abusive and is automatically detected and reversed on a daily basis; users found voting serially may be <a href="http://blog.stackoverflow.com/2009/04/a-day-in-the-penalty-box/">suspended</a>.  For more information, see <a href="http://meta.stackexchange.com/questions/126829/what-is-serial-voting-and-how-does-it-affect-me">What is serial voting and how does it affect me?</a></p>