Let me bring two new posts to your attention:
Scatteh has posted something about dream RP on the forums - an opportunity to face dungeons in-character without any further impact on settings and/or hubs. Bring whomever your co-players are okay with, you won't remember it when you wake...
Also, there's now a wiki page about etiquette for those who need it and a link to an external wiki with an overview on drop sets.