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CompuServe was the first major commercial online service provider in the United States.
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Christensen and Randy Suess created the first computerized bulletin board system to make announcements and plan meetups with friends
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Usenet is a collection of newsgroups where the users can post messages and these posted messages are distributed via Usenet servers.
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GENie was an online service created for GE.
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ICQ is an instant messaging client that was first developed and popularized by the Israeli company Mirabilis.
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Six Degrees was based on the Web of Contacts model of social networking.
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Open Diary was notable for a lot of reasons.
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LiveJournal is a Russian social networking service where users can keep a blog, journal or diary.
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Myspace is a social networking website offering an interactive, user-submitted network of friends, personal profiles, blogs, groups, photos, music, and videos.
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American online social media and social networking service company based in Menlo Park, California.
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Twitter is an online news and social networking service on which users post and interact with messages known as "tweets".
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WhatsApp Messenger is a freeware and cross-platform messaging and Voice over IP service owned by Facebook.
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Snapchat is a multimedia messaging app popular around the world created by Evan Spiegel, Bobby Murphy, and Reggie Brown, former students at Stanford University, and developed by Snap Inc., originally Snapchat Inc.
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Tinder is a location-based social search mobile app that allows users to like or dislike other users, and allows users to chat if both parties swiped to the right.
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Vine was a short-form video hosting service where users could share six-second-long looping video clips.
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Pheed, a patented mobile pay-per-view technology and social networking service that competed with Facebook, Twitter, and related sites.