@owashii Some more that I see, some used more widely than just cws. Most of these are kinda clear but inevitably they'll be new to someone.
ec = eye contact
ment = mentions of a topic without description (e.g. "sex ment")
tmi = too much information (usually for intimate topics)
OH = overheard (for quoting things ppl have said in person)
sui = suicide (someone else mentioned that one)
Also with +/-, more +s or -s tends to mean things that are particularly positive or negative.
timeline's always dead 'round these parts