SharePoint 2010 comes with a bunch of web 2.0 features, tags, tag clouds, rating, social bookmarking and enhanced blogs and wikis. This could lead to a confusing meta taxonomy. The web 2.0 wave is that tags and tag clouds are a great, simple and flexible way to organize information. Now with SharePoint 2010 this and much, much more comes out of the box. Tagging becomes one of the most significant concepts for building enterprise taxonomies in SharePoint 2010
What can be tagged? List Items (Terms, Keywords, Social Tags) Documents (Terms, Keywords, Social Tags) Pages (Terms, Keywords, Social Tags) External pages (Social Tags) This means everything that has an URL can be social tagged. Do you know anything in the web that hasn’t one?