This is much bigger issue than plagiarism and they should be perma banned.
It absolutely is and they should be banned!
I'll see if I can put a list tomorrow of all his accounts and fake announcement threads. I'd say there are at least 20 of those (all created within the last 30 days, most of which are gone; either deleted by a mod or self-edited/deleted).
edit; I take my words back, mods actually ban/nuke some of these accounts. Here's the list of his alts as promised:
KillRoy2005 - not banned
Hezacez - not banned
morthar - nuked
MaBug - not banned
s107n - banned
AlexDuma - banned
imreal not banned, currently has one active
fake ann, haven't checked wallet.
Kiokawa not banned, has also one active
fake ann which is copy of
this one, haven't checked wallet either.
I swear that there was another newbie account, but I can't remember his name right now. However, one thing I can assure you, he's not just going to stop, expect a lot more of these ANN...soon.