I worked as a chatroom bouncer/mod for a very large, supportive women's commmunity (with "corporate" and legal eagles and all) and there was no involvement allowed in suicide cases. They just needed to be sent for professional help.
I remember one case of a potential suicide (very clearly announced, and I was summoned in by another member by PM). She had a serious drinking problem and her husband was going to take the kids and leave her.
I did nothing more than TOS allowed, which was to show her caring compassion and tell her she wasn't alone with that problem, and suggested she go to AA - including giving her a link, and an Alanon link for her DH. No counsel beyond that, she promised, said thank you profusely with hugs.
An official report was made, chat logs included (again, legal protection), and and that was the last heard of that problem in chat.
[edited by: Marcia at 8:13 am (utc) on May 11, 2007]