This will be interesting to watch. A blogger throws a convention/get together for the regular readers of the blog. Yearly Kos Convention.
It is another example of how regular blogging builds connections across readers. Blogging created this community.
The community comes to share an understanding of direction and values based on the content of the main feed. The community interacts and posts comments. They instigate and foster reactions from each other. The community comes together (at the convention) to build stronger social bonds and in the process increases the capacity of the group to act.