Ask an Expert

UKExpert - A discussion site with a large team of expert moderators and members making up its community. It also has live news, polls, and a photographs section.
http://www.ukexpert.co.uk/

Videojug - A large collection of professional and amateur video tutorials, how-to videos and advice. Users may submit questions as well as video answers.
http://www.videojug.com

IQgeeks.com - Question and answer services as well as a forum for discussions of random, weird and interesting facts.
http://www.iqgeeks.com

iQuestions - Video answers to lifestyle questions answered by Christian experts in the areas of marriage, parenting, intimacy, finance, faith, career, and other topics. Users may submit questions, share answers, and join discussions.
http://www.iquestions.com

Blurt It! - Users can ask questions, answer questions, and collect points for questions answered.
http://www.blurtit.com/

QandAs.com - A community of experts and specialists covering dozens of topics. Must do free registration to ask a question.
http://www.QandAs.com

Globe Alive - Searchable database of experts standing by to help you.
http://www.globealive.com/

Askville by Amazon - User-generated questions and answers, also with discussions and expert user profiles.
http://askville.amazon.com/askville/Index.do#answers

European Experts Exchange - Multilingual experts offer their feedback on common open-source applications, including PHP and MySQL.
http://www.europeanexperts.org/

Wondir - Ask or answer questions on all topics. Responders are eligible for tips, prizes, and published ratings.
http://www.wondir.com/

Nadlan Info - Panel of construction experts responds to questions about civil engineering, architecture, interior design, and plumbing.
http://www.nadlaninfo.com/

wiseGEEK - A growing archive of questions and answers, covering twenty different categories. Users can ask questions and comment on articles.
http://www.wisegeek.com/

I Recognise That - I Recognise That is a place where people can ask or answer questions about anything and everything. Someone that asks a question can also upload a photo to help illustrate that question. Questions are answered by other users.
http://www.irecognisethat.com

Google Answers - Now retired service where live researchers used to answer your questions on any topic for a fee. Existing answers can however still be browsed or searched for free.
http://answers.google.com/

JustAnswer - Auto mechanics, doctors, accountants and other experts answer user-submitted questions for an agreed upon fee.
http://www.justanswer.com/

Since You Ask - Ask any question, researchers will find the answer and post it on the page.
http://home.flash.net/~goodkids/sya.html

Ask A Linguist - Post a question involving language to a panel of linguists; browse and search past answers.
http://www.linguistlist.org/ask-ling/