Usually I just /msg the OP in the chatterbox and tell him/her about the typo.

Many monks are quite responsive and fix their typo, so far nobody reacted offended (or offensive).

If there's no reaction and it's a very active thread (or frontpaged) I somtimes consider the node and suggest "fix typo in title: s/Momory/Memory/".

In reply to Re: Fixing typos in replies by moritz
in thread Fixing typos in replies by almut

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