One possibility, and I think HN is the right forum, is to produce some tools to leverage those communities.

Some ideas:

1. Working infrastructure for chatrooms etc

2. A curriculum for people to go through

3. The most important thing, I think, is to have those weekly classes to tune into so the people adopt the rhythm.

And whatever other ideas all the smart HN readers might suggest following this.

Edit: Someone should submit this as one of the projects!