If you weren’t able to attend DreamForce this year (as I wasn’t), all the presentation have been made available at the Salesforce Community site.
The developer network also provides technical details and examples on integrating with Amazon, Facebook and Force.com Sites.
I think Sites is definitely going to be great selling point for Salesforce. Now from within Salesforce, you can develop applications and pages based on Apex and VisualForce and allow non-Salesforce users to access them. The pricing model still has to be determined and Sites is only in developer preview but it is definitely worth looking into.
You can sign up for a free developer account and attend one of the free webinars at the developer site.
