FaceBook Email Service

It has been learnt that Facebook is starting its free web based e mail service for its user in very near future. This may greatly effect the popularity of gmail of google. Facebook may announce some thing about its e mail service in web 2.0 summit which will be held on 15 Nov 2010 . Lets see what will announcement will be made by facebook about its email service and what is the reaction of google on this announcement and how google defends and maintains its leadership in web based email service,