Inconsiderate!

[Zatias]

You have 6 people at a gigas NM to collect KI for Briareus, and a nin comes out of nowhere and pops one for himself. This, I consider as blatantly rude and inconsiderate.

I find this inconsiderate as well. If they only had one KI NM to pop, they could have asked if they could pop it, and usually the group is happy to proc it so the soloist will get the hell out ;P Because we all know the majority of solo players will cost you 3-5 NM pops worth of time.