Someone who adds people that they don't know, or that annoy them on either myspace, facebook, or other such social networking sites, in order to increase their friend count. A portmanteau of "vain" and "maniac". See
George is such a vainiac. He added Jack on myspace, even though he HATES him. He just wants to up his friend count.
by Lyssdexia September 20, 2007