Over here we have the "Samaritans."
Iraq call it the "Recruitment office"

Ignore them.
The sad fact is most "attempted suicides" are designed to fail but get a lot of attention. Ask any cop or EMT. They are attempts by sad, lonely or desperate people who need help or want attention but who lack the guts to ask for it. Posting an "I'm gonna kill myself" message on line is just the ultimate cry for attention. And, unfortunately, giving them attention just feeds the need for more.

i would suggest plenty of pain killers, the strongest and plenty of sleeping tablets, it can be hard to obtain them sometimes but pay a visit to every shop and chemist all in one day when you are sure you want to do it, and then go home when you know you have at least a few hours alone if you do not live alone and just take the tablets and you will fall asleep, i would also suggest taking a couple of sickness tablets so your body does not reject the others. this is the method i will be attempting later today, if it doest work i will let you know.

ppl who really want to kill themselves put their affirs in order and are successful, there is no attempt at suicide. ppl who attempt more than once may have issues, but most likely just want attention and someone to talk to them about it

Ignore them. People who talk about suicide rarely follow through-they're just looking for attention.
Besides, if it's a real problem the last thing they need is for some untrained do-gooder sticking their nose in it.

If they were seroius they would not bother with asking they would just do it.

Use reverse psychology

dude i would flag this if i believed in that type of thing... just don't

Im shocked more by the fact that someone would actually respond to this in the way that you wanted them to.

To begin with try to post a very well coordinated and easy to understand answer so they will get in touch with you. Once in touch give them the 800 lines, Hot Lines and Help Lines for suicidal people. I would look for them but my eyes are killing me.

I have been online with a few trying to help them, the most important for them is to get it out of their chests and tell you all about their problems, then in short phrases explain why not or whatever the answer is, try to give them hope that is the key word.

I am bookmarking this question, tomorrow first thing in the morning I will get all I can and post it as an EDIT.

Be very careful they may become a bit aggressive as they are hurting which is understandable. Sorry my friend but I am almost blind right now.

EDIT: Could not go to sleep, here are the links but read them first:

http://psychcentral.com/helpme.htm

http://www.befrienders.org/

http://www.suicidology.org/

P.S. In the above links you have about 1700 Hot Lines for suicidal people, the Samaritans Hot Line is included.

Regards.