Really neat way PM is using social media and Web 2.0 to engage with the public.

I subscribe to Number 10's Tweets. That alerted me to the microsite calling for input to this weekends summit. On there is a YouTube video with Mr Brown asking for input.

The summit is also promoted on the Number 10 website 

I know the goal is 'joined up Government' but this looks like 'joined up social media'.