Someone who spams a forum or message board with so many posts that it's overwhelmed like Godzilla attacking Tokyo. See also, Tspam-nami and spam canon.
Intercaust has posted so much porn in the forums at www.leghumper.com that he's become Spamzilla.
A term denoting a female propagator of spam. It conveys a negative connotation. From spam + zilla (from the Japanese film monster Godzilla).
That girl's a regular spamzilla, the way she copy-pastes and posts every piece of spam she lays eyes on.