Everyone is familiar with Twitter, Facebook and LinkedIn. But how many social media sites are there in the market? According to KnowledgeNetworks, here’s a list (in no particular order) of “commonly categorized” social media sites:
Bebo.com
Flixster.com
Myyearbook.com
Blackplanet.com
Friendster.com
Ning.com
Cafemom.com
Hi5.com
Picasa.com
Classmates.com
Imeem.com
Plaxo.com
ClubPenguin.com
Last.fm
Reddit.com
Del.icio.us
Live.com
Reunion.com
Digg.com
LinkedIn.com
Tagged.com
Facebook.com
Livejournal.com
Twitter.com
Flickr.com
Myspace.com
YouTube.com






















