This conference site is actually called a Ning, an online social network. The word "Ning" is Chinese for "peace." Anyone can create a Ning around any topic or need. There are currently over 600,000 Nings in operation. You'll find a tremendous variety at Ning.com.
Three of the best Nings I know of are great examples of how communities of teachers can get tremendous value from connecting with each other online and sharing expertise and resources. They are:
This "Ning" idea is a great idea! I am using this type of site for students as well. TJ's Gift is hosting a conference for youth from the North called the "Soaring Eagles Conference" and I'll be in contact with the participants of that conference throughout the year, using a "Ning". So thanks, Ray!