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Email
Allowed people to start sending letters but virtually and made it easier. -
Compuserv
A virtual newsletter that could be really expensive if talking over long distances. -
Usenet
Allowed people to post articles or posts to newsgroups. -
IRC
Used for file sharing, link sharing, and to keep in touch. -
Six degrees
The first modern network that allowed people to make a profile and make friends online. -
Live journal
A social network built around blogs that encouraged users to follow one another and interact with each other.