Being a fan of Ning and having my own community on the platform, I am watching with great interest the overall activity level of the Expo site.   It appears to me it is becoming one of Ning’s most highly active communities for the next 2 weeks.  Will it hit 1000 by the start of the conference next week?  Also, what will happen after the conference?  After thinking about, it seems to me that naming it macworldexpo.ning.com is a little limiting to just a few weeks a year.  But, still I am very pleased that they did start a social networking community around the conference.