ERPing and how to handle it should you see it.
-- Warn them(politely), report them, ignore them if they continue.
-- Thread: http://us.battle.net/wow/en/forum/topic/1827258606
Using the Vial of the Sands to RP a Dragon.
-- It's generally frowned upon, can be proven OoCly and ICly to not work, but if you can find an accepting group and you do it well, it can work. Don't expect wide acceptance.
-- Thread: http://us.battle.net/wow/en/forum/topic/1827308891
Languages, Translations, and where to find them.
-- While it's possible lorewise for characters to learn other languages, you have to turn to an addon to allow you to speak them in RP.
-- Thread: http://us.battle.net/wow/en/forum/topic/1869557258
"Breaking" and "Bending" Lore.
-- Many many people frown upon it, but there is a small community that supports it. Try to find them, don't expect people to accept you or your story/character. Most prefer to RP WoW in WoW.
-- Thread: http://us.battle.net/wow/en/forum/topic/1827668013?page=1
Death, Healing, and mechanics.
-- There are many ways to handle death and healing in World of Warcraft. One of the more accepted ways is that Death is final. You can also be ressurected, but you can't cheapen Death by making it easy.
-- Thread(s): http://us.battle.net/wow/en/forum/topic/1658711113 , http://us.battle.net/wow/en/forum/topic/1020822138
Races that don't exist in WoW, in WoW.
-- Much like breaking or bending lore to allow things that should be, roleplaying a race that doesn't normally exist(Dark Elves, other fantasy races) is generally frowned upon. You can find those that accept it but don't expect wide acceptance.
-- Thread: http://us.battle.net/wow/en/forum/topic/1827305646
Vampires in WoW
-- Classical vampires do not actually exist in WoW. There are vampiric creatures, there are also vampiric demons or other creations, but a Vampire like you would see in Dracula does not exist.
-- Thread(s): http://us.battle.net/wow/en/forum/topic/1827308694 , http://us.battle.net/wow/en/forum/topic/1126994716
Love in World of Warcraft
-- Love can strike anyone at any time. However, you must take into consideration ICly and OoCly genetics, cultural differences, age discrepancies, and physiology.
-- Thread(s): http://us.battle.net/wow/en/forum/topic/1827258515 , http://us.battle.net/wow/en/forum/topic/1083609740
Why Night Elves look different from Blood Elves, and High Elves.
-- Usage of Arcane magic drove the Highborne, Blood Elves, and High Elves from the rest of Night Elven culture. Arcane magic altered their culture and outlooks. High Elves and Blood Elves look differently from Night Elves because they were severed from the Well of Eternity.
-- Wiki: http://www.wowpedia.org/High_Elves ; Section: Foundation of Quel'Thalas.
-- Thread: http://us.battle.net/wow/en/forum/topic/1827305635
Roleplaying a race that you aren't.
-- It takes suspension of disbelief, use of addons, and ingame items to pull something like this off, but it is possible. There's limits, but many options are within reach.
-- Thread: http://us.battle.net/wow/en/forum/topic/1764408452
Dealing with "bad" RP.
-- General consensus is that if you see someone RPing "wrong", -politely- inform them, in whispers, that they may want to rethink how they are RPing. Don't push them, but give them a gentle nudge to these forums or other Lore sites.
-- Thread: http://us.battle.net/wow/en/forum/topic/1083359337
Dealing with godmoders.
-- Much like "bad" rp, you can politely inform them that what they're doing may not be entirely correct. Refer them somewhere that they can use to help themselves out. Or you can simply ignore them if they don't listen to reason.
-- Thread: http://us.battle.net/wow/en/forum/topic/1827524850
Are Highborne Immortal?
-- Highborne, like normal Night Elves, are no longer immortal. They used to be, but were sustained by demons and other unsavory magics instead of being naturally immortal.
-- Thread: http://us.battle.net/wow/en/forum/topic/1827304290
Roleplaying as a Dragon.
-- Roleplaying as a Dragon is a touchy topic. Many will tell you to simply "DIAF". However, it is possible, and can be done. You must to a lot of research and be ready to take a lot of heat. I don't encourage or down it, it's an individual thing.
-- Thread: http://us.battle.net/wow/en/forum/topic/1756043459