Social Web

Web 2.0

Infrastructure

1969
2001
2010

Initial Communications

1971
1978
1980
1986

Social Networking

1995
1997
2002
2003
2004
2007
2008
2009
2011

Social Bookmarking

2001
2003
2004
2005
2010

Media Sharing

1999
2002
2004
2005
2007
2007

Blog

1999
2001
2002
2006
2007
2008

Wiki

2001
2002
2003
2003