Yesterday I received a serial upvoting on many of my questions within a minute or two. Today I saw that the serial voting was reversed (something I had expected to occur). Luckily for me, that happened after I capped so I didn't even see any reputation changes.
I am wondering what are the repercussions to the voter. Does such voter get an immediate notification of the reversal? Are they being listed and warned by moderators? Is there any difference between upvoting and downvoting (in the case where sock puppets are ruled out, of course)?