Researchers answer questions on any topic for a fee determined by the submitter.

Windows, Mac OS X, Linux, and other tech support questions answered by published experts for a yearly fee. Includes signup information and author/expert profiles.

Fee based program to ask a physician for opinions related to medical conditions.

Buy, sell and trade advice and information.

Offers inspiration, marketing ideas, research, and negotiating.

Live researchers answer your questions on any topic for a fee.

Service which offers telephone conversations to ask for advice.

Get answers to questions on many subjects. Questioner posts question, views bids to answer, and selects best proposal.

Gives users direct access to experts in a wide range of categories. Offers full sound and video facilities in addition to e-mail and chat.

Online marketplace facilitating the exchange of money for fast solutions. Anyone can post a question and anyone can answer.