I just got one of those informational chain e-mail things. I go straight to http://www.snopes.com when I get one of these. What they do is verify the accuracy of the information and if they find conflicting or supplemental information they cite their sources in a bibliography. I know it would be inappropriate to send this link to the person who sent me the chain e-mail but I need to tell SOMEONE about Snopes. Because it's a great resource. I don't have time to do that much research into chain e-mails, but they do, and I think they do a pretty good job. Often times you'll find out that the chain e-mail isn't worth forwarding.
If you don't know "Snopes", you should