A pollwhore is really just someone who takes a ton of polls. It doesn't really matter if they post or not, they just continiously vote in a bunch of them.

Most of the time, for the poll option deffinition, a poll whore is someone whom doesn't care about the question asked or doesn't like the choices given.

And then there's the non PG-13 version of the word! =D
....which I am not allowed to say. *cough*