I would be wary of sites like yahoo answers. When it comes down to it, your mental wellbeing is important too and if your frustrated at not being able to help people i think its best to leave these people to find a more suitable form of help. Obviously if your particularly worried about someone then perhaps provide them with some crisis numbers or support websites. Don't take it upon yourself to swoop in and try and sort out the situation yourself though - thats not fair to you. Perhaps you could direct the guys on that site to this forum if they want support?