Drupal Architect has lots of notes on modules.
The idea is to provide instructions and examples for configuring Drupal modules.
In the future, integrating with Module Usage Documentation, Modules Info, and Project Browser.
This would let you create notes and examples from within your side that others could see while browsing modules.
Integration
Currently, modules are a taxonomy on this site.
The plan is to use something like External Entities to map to display content from drupalarchitect.info here.
Would Entity Share work?