A couple of years back I was pretty active on a forum that had a chat. (It is actually where I met my wife.) One guy on the chat was suicidal and told us. Through a little research we managed to find out what city he was in. I got him into a private chat. My wife had his local police on the phone and Another person was helping me in a different private chat to tell him the right things. It took a couple of hours, but we finally got help to his house. His wife had just left him and he was drinking.
Our responsibility to each other on this forum is the same as out responsibility to our next door neighbor. We help when we can, grieve when they grieve, smile when they smile, and sit and watch when we can do nothing else.