Perhaps it would help if everyone policed themselves on both sides, both in being clear what is written by their character and what is not, and in taking the time to read carefully any post they wish to post a response to make sure what they're responding to was something another character wrote so their character could indeed have read it. Maybe a universal format for posting might help too, in which say thoughts of a character would be between () or something, actions between **, and spoken words between "". It's a suggestion anyway.