If you get a chance, check out this link, to a site called "Crimes of Persuasion" which lists a whole ton of scams, cons, and basic rip-offs and how they work.
The link can also be found at:
A pretty useful site!
Les Henderson is the author of a book by the same name.
Pretty fascinating information!
THE ONLY DOWNSIDE to the site is the odious INTERNET ADS at the top of each page. Many are for the very same scams the author is warning about.
NEVER click on an Internet Ad! NEVER!