I was thinking "Oh, its that Amazon Honor System (allowing people to make donations to folks who put a button on their website, for example bloggers) all over again", except no. Its a "One guy writes up a money saving tip, other people vote it up".

Here's my tip: neither the technology nor the content is interesting.

Sample: Pay your bills online to save on postage or Take advantage of free entertainment in your community – parks, museums, exhibits, etc. Go to free park concerts and other community activities.