Web 1.0 was about reading but, Web 2.0 is about writing
Web 1.0 was about companies but, Web 2.0 is about
communities
Web 1.0 was about client-server but, Web 2.0 is about peer to
peer
Web 1.0 was about HTML but, Web 2.0 is about XML
Web 1.0 was about home pages but, Web 2.0 is about blogs