Any scheme or organization that promises quick financial rewards for little effort, esp. those that attempt to show a happy 'community of users'. Usually promotes itself with many (often over-emphatic) so-called personal testimonials.
Examples of econocults:
"Sign up 5 of your friends to our great offers, and get a FREE Ipod!"
"I earned over $20,000 in the first five minutes on the Amazing Crazy Cash system!"