Abuzz - offers a network for asking questions and sharing knowledge.
AllExperts - covers a variety of topics including music, sports, health, love and romance, and more.
Answer Guide - every month, National Geographic's Research Correspondence division answers several questions received via email.
Ask a Chef - ask questions and receive answers from chefs around the world.
Ask a Linguist - designed to be a place where anyone interested in language or linguistics can ask a question and get the response of a panel of professional linguists.
Ask A Reporter - submit questions and get answers from different reporters from the New York Times.
Ask An Expert Page - get answers to questions about science, math, movies, the Internet, and more.
Ask Joan of Art! - art information specialists at the National Museum of American Art will answer your email queries on American art. Includes informative FAQ.
Ask the Experts - part of the My Virtual Reference Desk collection; provides links to a variety of experts in different fields.
AskForFree.com - advice given by email to specific questions in a variety of categories.
Capitol Questions - answers to congressional questions from a veteran observer of the legislative process.
Dream Interpretation - This site offers self help in the area of inner spiritual awareness through dream interpretation.
ExpertCentral - features experts organized by area of expertise. Some questions answered for free, with others the experts will propose a fee for helping you.
Experts Exchange - thousands of experts answer technical questions, which are posted on site by subject area. Focus is on computer queries.
Globe Alive - search engine listing live experts and conversationalists standing by to chat with you and answer your questions.
Infography, The - online reference tool enabling students, librarians, and teachers to identify superlative sources of information about a range of subjects. Published by Fields of Knowledge.
Pitsco's Ask an Expert Page - get answers for questions in science and technology, health, entertainment, business, law, and more.
QandAcafe - live, online reference service from San Francisco Bay Area libraries.
QuestionPoint - collaborative reference service from the Library of Congress and OCLC.
Straight Dope, The - fighting ignorance since 1973 with answers to intriguing questions.
Virtual Reference Desk - digital reference service offering an Internet-based question-and-answer service connecting users with subject experts.
Wondir Foundation - an information service that aims to build an open-source infrastructure. Their goal is to organize and enable the sharing of answers from FAQs, the deep web, online expert programs, and other Internet resources.