Domestic Service as a community tool?

I am noticing that a lot of domestic service sites are popping up.  Criag Newmark’s Craigslist for service site, All For Good just launched.  Read  JD Lasica’s write up about it

I am wondering if the KIVA USA site and the Extrordinaries or All For Good are working to connect the volunteers with each other. These are all sites that will be effective in getting people to do service, but let’s try to build community within these activities, so it’s not just about people doing work for themselves, but also taking advantage of the fact that there are many other people who share similar goals. This falls under the umbrella of the type of community that take advantage of people sharing a similar focus or mission. Online Community is an invisibile, intangible collection of people who are working together toward a similar goal or focus.