Is there a need for arts criticism?

http://operanews.com/operanews/templates/content.aspx?id=17888 I am currently a correspondent for Opera News and have attached a link to my most recent review of The Atlanta Opera's production of Puccini's La Boheme.  Is there a need for performing-arts criticism and what is its purpose?  Often reviews are helpful to those in the business who want to read about current productions, in order [...]