Insomnia Support Group
Insomnia is a symptom, rather than a disease, and is characterized by inadequate quantity or quality of sleep. People with insomnia complain of difficulty falling or staying asleep, which results in significant impairment of daytime functioning. Insomnia is categorized as transient (shorter than one week), short-term (one to three weeks) or chronic (longer than three...
As for "chat" I do not believe that DS has this function, at least as far as I know. Private messaging is close, but no way to know if the other person is still online or not. BTW - - I may be wrong about chatting, never had a reason to try to find it or have I ever read of anybody doing it.