related post : The Best Web 2.0 Software of 2005
http://del.icio.us/
http://netvibes.com/
http://voo2do.com/
http://digg.com/
http://flickr.com/
http://openomy.com/
http://memeorandum.com/
http://katrinalist.net/
http://writely.com/
http://calendarhub.com/
http://basecamphq.com/
If I have to choose only one, that’s a flickr!
