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Panel of construction experts responds to questions about civil engineering, architecture, interior design, and plumbing. - [Read more]
- www.nadlaninfo.com

A community of experts and specialists covering dozens of topics. Must do free registration to ask a question. - [Read more]
- www.QandAs.com

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. - [Read more]
- www.ukexpert.co.uk

A large collection of professional and amateur video tutorials, how-to videos and advice. Users may submit questions as well as video answers. - [Read more]
- www.videojug.com

A growing archive of questions and answers, covering twenty different categories. Users can ask questions and comment on articles. - [Read more]
- www.wisegeek.com

Ask or answer questions on all topics. Responders are eligible for tips, prizes, and published ratings. - [Read more]
- www.wondir.com