Quora is probably the biggest untapped money making machine out there. It receives hundreds of millions of visitors (mostly from Google) per month. Advertising is dirt cheap. I advertise for a few cents per click and get amazing results.
On this page I direct you to different guides I set up about Quora.
My first guide is How to successfully appeal a Quora policy violation.
Oops. Some of my best answers were deleted just like that AND I lost my answering privileges too!!