Online social networking websites saw their ranks swell and values soar this year as everyone from moody teenagers and mellow music lovers to mate-seeking seniors joined online communities. Google's freshly released "Zeitgeist 2007" reveals that seven out of the 10 hottest topics which triggered Internet queries during the year involved social networking. A Top Ten list compiled by the world's most-used search engine includes British website Badoo, Spanish-language Hi5, and US-based Facebook.
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