cunning linguists
Will have fun by switching language each sentence they deal with the chat bots, or just trying obscure languages. At what point is it not financially worth the company producing a chatbot "fluent" in a language?
in UK (i.e. trade off of "training" in the language vs peopel using that language to interact)
Welsh - given some of the equal language laws in Wales, depending how interpreted, they would probably have to support this, which could cause them hassle.
Gaeleic - fun, as a whole set of variants, Manx Gaelic bot anyone?
Cornish - on the rise, but low numbers of really fluent speakers
.. but general slang / bad use of English will be awkward enough for bots (to/too there/their etc misuse (or often people not bothered on spelling as know the context is understood by a meatbag) as careless typing takes a lot more contextual analysis