A phenomenon that the internet has created is the email (and often web site) hoax.
It is always important to make sure that your source (a web site or email) is reliable. This means that the information is true, or in the case of advice, that it is from a true expert. Just because something sounds true, is said to be from an expert, or is really believable. Before wasting time and money "sharing" this information with others, you need to verify it.
The best place to start is at Snopes.