From Wiktionary, the free dictionary
From greets + -z.
Phonetic spelling of greets.
greetz pl (plural only)
- (often demoscene) Greetings; Alternative form of greets
2000, MattD.., “Greetz! And Mark, where are ya?”, in uk.radio.amateur (Usenet):OK, greetz to all the real amateur radio ops and enthusiasts out there.
2003, [sis], “Greetz from Poland ;)”, in soc.culture.czecho-slovak (Usenet):
