In the US there are a couple different groups working on similar projects.
http://www.helpsteps.com is mainly in the Boston area
http://www.auntbertha.com is based out of Austin
Http://www.healthify.us is another one.
There's also an open source project called Ohana that provides an open directory for community resources and services as well as API for people to deploy this sort of idea in their own community. http://ohanapi.org
To expand on this, we are a very open organisation that loves knowledge sharing, the front end of the site is open source and we always entertain working with other 3rd parties / organisations to share ideas, so just because we're not planning to launch an off-shore version the app doesn't mean that we won't ever work with others to help create / improve their services or ideas.
Just to expand on that a bit, the data is currently limited to our in-house database of services in Australia.
We are looking into including additional (Australian) data sources in the future (for instance, there are some open data sets which various government agencies make available that we'd like to include).