What sources does snopes use to provide answers?

snopes is a website that deals with urban legends and states them into true, false or unconfirmed. It is a very good website wich I have been subscribed into receiving the newsletter when they come out with new ones. No where in the website I have found the way they do their research into the information accuired, so to better understand this in the related links box below I posted the most frequent answers page. I hope this makes you understand how they operate.