If you want to be *really* purist about not letting languages split the community, there\'s always the option of inventing a whole new language for the game and only allowing that to be spoken... but then you probably won\'t get many players.

Although IMHO it\'s the lesser evil for multiple languages to exist rather than everyone speaking the same (and English did not become the international language by being any good for the purpose), ramlambmoo mentioned the idea that different languages are like different types of food. Indeed they both add diversity to to the world, but there is a serious flaw in directly comparing languages to food: everyone knows how to eat - there is no or very little learning needed to eat different types of food (maybe e.g. learning to use chopsticks and even that\'s usually optional), whereas a lot of effort is needed to learn to understand a new language. Even the effort involved in learning to cook different food is probably less than learning to speak a different language.
Can I just point anyone who hasn\'t seen it to my suggestion for a translation help channel (on the Wish List board):
http://www.planeshift3d.com/wbboard/thread.php?threadid=14746&boardid=11&styleid=3&sid=59f6e22ac12164b343e67d1b2ea07e6b...and my post about gestures which is somewhere earlier in this thread, and maybe I should re-post it somewhere else.
And, not related to PS (but this thread isn\'t now anyway) - here\'s a few fun language-related links:
http://www.omniglot.com/ - if you think \"writing\" only means the letters A to Z, think again...
http://www.trigeminal.com/samples/provincial.html - \"Why can\'t they just speak English?\"... and the equivalent phrase in about 100 languages.
http://www.google.co.uk/language_tools?hl=en - by clicking the links under \"Use the Google Interface in Your Language\", you can see what Google looks like in all the supported languages without it changing your default language to them.
http://www.lojban.org/ - Lojban: the logical language - an interesting constructed language which is based on the principles of logic and aims to allow maximum flexibility of expression. But isn\'t, in my experience, quite as easy to learn as they claim.