New answers tagged formality
Taking "formally" to mean 丁寧語 here, I think it depends. Chatting/Twitter/BBS If you use your real name, I think the usual rules apply (which are too complex to fully describe here, but I'll mention some aspects). Use 丁寧語 with people you don't know well and people older than you. If you aren't talking at someone (say, a non-@ tweet, or saying something ...
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