Salesforce.com demoed Force.com Sites today.  I must say… it looks cool.  You can host a website and publish data from within salesforce in real time using VF pages.  The site is hosted by Salesforce and you get a set number of page views per month according to what edition you use, and security controls similar to a profile.

Implementation Timeline:

Developer Preview:  Available now! Those that attend the webinar automatically have their developer account activated.  Anyone else can activate sites through this link.  This link will also let you register for tomorrow’s webinar.

Select clients: Spring 09

EE and UE: Summer 09

GE and PE: Winter 09

Check out the Developer Challenge– win a free ipod if you’ve got a compelling use-case for the sites engine.