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Wikipedia launches, it is a free encyclopedia that anyone can edit
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Technorati, a search engine for blogs go's live
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StumbleUpon launches, it is a website that recommends web content to its users
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LinkedIn is launched, it is a business related social networking site used by professionals.
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Myspace launches January
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In February, an image and video hosting website called Flickr is launched.
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October
Yelp begins. It is a social networking site where users review local businesses. -
December 5
DIGG begins, it is a social news website -
Google launches gmail
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March 1
Facebook expands from Harvard to other universities. It is a social networking website. -
Facebook reached milestone of one million members.