C - D list of Web 2.0, Social Media, Networking, Tagging, Sharing Sites

http://www.calendarhub.com/
http://www.calgoo.com/
http://www.campfirenow.com/
http://www.care2.com/
http://www.chacha.com/
http://www.chalksite.com/
http://www.chuquet.com/
http://www.citeulike.org/
http://www.citycita.org/
http://www.claimid.com/
http://www.cocomment.com/
http://www.code.google.com/webtoolkit/
http://www.coghead.com/
http://www.collectfavorites.com/
http://www.collectivex.com/
http://www.color.sharewonders.com/
http://www.colourlovers.com/
http://www.comeeko.com/
http://www.communitywalk.com/
http://www.complore.com/
http://www.computerlove.net/
http://www.conceptshare.com/
http://www.connectedy.com/
http://www.connotea.org/
http://www.consumating.com/
http://www.craigsnumber.com/
http://www.crazyegg.com/
http://www.cssbeauty.com/
http://www.dabbledb.com/
http://www.dailymotion.com/us/
http://www.dappit.com/
http://www.ddir.org/
http://www.de.lirio.us/
http://www.del.icio.us/
http://www.desktoptwo.com/
http://www.developer.mozilla.org/
http://www.deviantart.com/
http://www.digg.com/
http://www.diigo.com/
http://www.dimewise.com/
http://www.docs.google.com/
http://www.doggdot.us/
http://www.dotnetkicks.com/
http://www.dropboks.com/
http://www.dumpr.net/
http://www.dzone.com/