Who or what is Vote Fairy?
A figure of speech. You know how you have a limited
number of votes (for upvoting and downvoting nodes)
each day, but once per day they get replenished?
There's a once-per-day process (a cron job or some
similar thing) that looks at each user in the
database and sets the votes left number up to the
correct number, based on the user's level. Some
people like to call this the "Vote Fairy". Unlike
some of the others, a user account is not
really needed for this. (NodeReaper needs one
because somebody has to own the reaped-node
placeholder nodes; im2 needs one so you can
/msg it, among other reasons; Anonymous Monk
needs one because, again, somebody has to own
his nodes. But the Vote Fairy doesn't need to
exist as a user, it was just somebody's idea of
an interesting joke.) I was a little surprised
that root was not included in the poll.