1.A blood sucking vermin that drains strenght from it's host.
2. Any of various chiefly moronic filesucking, bandwiidth hogging, and
carnivorous 'users' of
the class assholenea takeallus, of which one species (homo forumis) is
generally found to suck in forums too.
3. One that preys on or clings to another; a parasite, fileleech.
4. One on who existance depends on the good deeds of others, but never themselves.