I’m happy to see that the social networking ‘integrated experience’ is mentioned because this is an excellent core feature on the Maemo 5-based Nokia N900.

where was that?
me as a N900 user didn't found it. It sucked, except for the status display which was delayed and the share function nothing worked. everything you wanted to do you would of been forwarded to the web-browser, which was amazing, but Facebook wasn't integrated.