Depends on who with.
LFD/Scenario unlikely (Usually /hi at the start and /ty /bye at the end). LFR only what is necessary (Tank Coordination/Tactics/Glee at someone dying to Gastropods)
Horde Characters very unlikely. No Guild, don't know anyone. Don't even have a Guild I really belong to.
Alliance likely in Guild. Sometimes in Trade, as I generally like my Realm. Unless the Children come and spam it that makes me leave cities.
Usually talkative on TS/Torment some folks on occasion. The job is to get me to shut up then.