I must admit that there was a time that I was guilty of inadvertently forwarding scam emails too.

Now if I receive a "warning" or something that looks suss, I never send it on until I've checked it out for myself. Eight times out of ten they turn out to be hoaxes, and I simply delete the hoax ones.

The site I use to check them out is Hoax Slayer : http://www.hoax-slayer.com/