Atleast I think it's a cheat. It's atleast very retarded:
I was partying with my ls in the Tama-tara Deepcroft, Lindblum near the crystal and this other purple ls shows up. Their group was huge (10-15). We were worried that we might have to compete with them, but then we started noticing weird things.
* A lot of their members were very low (16-24) and they had a few higher levels (30 ish)
* They weren't actually doing anything in this zone but kept running outside.
* They kept running outside... Somewhere they died over and over and over, returned to the crystal and kept running outside. While we kept grinding we could see a constant stream of white dots running from the crystal to the outside. Like ants...
* I went to bed after our grinding party and when I woke up this morning and logged back in they were still doing the same thing.
It's such a retarded gameplay that I can't help but wonder if it's some kind of cheat.