There are four parts to my answer:
I'm not going to answer the personal question directly. But I will say that I have a long term involvement (30 years) of concerns regarding suicide and successful suicide interventions.
Do I think that HubPages would be a good place for actual intervention that would be intended to help save a life? No. Direct suicide prevention requires expertise that could not be guaranteed through a HubPages forum and a level of personal contact and cultural familiarity not possible on a worldwide forum. HubPages is a community of writers and readers, not a community that could effective perform reliable intervention.
Would a forum thread in support of learning about suicide intervention be valuable? I'm not sure. I don't participate in the forums here. On the positive side, discussion and sharing understanding of suicide intervention is certainly valuable. But many people think they have good, reliable knowledge when the knowledge is partial, or only relevant to some cases or some communities. When life is on the line, how do we know that the guidance we are receiving is the best if it comes on an open forum with no system of accountability and few ways to prevent misunderstanding and groupthink?
To end on a much more positive note: Just by existing, HubPages already helps prevent suicide. It provides hope, inspiration, connection, and an opportunity for free expression. Each of these can help a person lift himself or herself out of despair and regain a reason to live and the feeling of joy in life.