Webhelp
http://www.webhelp.com/

"Real people, real answers, real time"

This site is in the throes of revision. Currently you can ask a question free from a staffer online. They're planning to offer tutoring from qualified teachers, and research assistance too.

It used to use a token currency you could spend in the site store. It's evolving from an auction site into a general web help portal, looking for ad revenue.

Answers are easy to get, but there is no access to anyone else's questions.

There's no interface inviting sellers to register.