#13 - Oct. 10, 2011, 7:41 p.m.
These forums are English-only, and any non-English posts will be deleted. We simply aren't set up here to support any other languages (because we don't speak them).
We recently announced that we will be releasing a localized Portuguese language version of World of Warcraft, and with that will likely come a community site and forums where the supported language will indeed be Portuguese.
We don't have any other information to offer on that yet though. Until then please only use English on the enNA site, or yes, your posts will likely be deleted.
We do offer an esMX site, if that's any more comfortable for you -
http://us.battle.net/wow/es-mx/?loc