Mobile search; text a question to ChaCha (242242) and receive an answer.
Advertised as the web's leading Q&A site; up until 2009 answers.com was where Google went for the definitions link;
Research and track the United States Congress; research and track your congress member, bills, resolutions, voting records, and news.
Title says it all. Great resource on how things work...check it out to understand how wireless networks work or your refrigerator or your cruise control on your car or ....
A wiki how-to. Great resource that shows 'how-to' do a large number of things, such as 'How to Manage your Time' to "How to print from your iPhone', with steps, tips, supplies, warnings, etc.