As a footnote, for those contributers who weren't around when emmett_s, nancy & roberto were at their peak:
As Catman said, these three produced a variety of strange & misspelt* postings. The other contributers weren't certain whether to be annoyed by them, laugh at them or ignore them... I think this peaked when roberto, the cooperat execitiv, claimed to have become a complimentary 'executed primer' on UA, shortly before Halloween.
emmett_s vanished, and we still don't know where he went, although a lookalike does surface occasionally. nancy still pops up once in a while, and roberto... well, roberto turned out to be a complete fraud. We have our theories about who he may have been, but on one occasion he accidentally made a post in perfect English (forgetting who he had logged in as..) and the cat was out of the bag!
roberto is still around - you see him popping up with his pal arturo (who is probably the original roberto), but he is now a hand-puppet, available to anyone when they feel like a little nonsense. We've learnt to live with this pair, although the Cat-cop does threaten them when they get out of line.
* Please don't get into the way that 'spelt' is spelled - we've been through all that already. I originate from the right side of the Atlantic, so I use spelt.