I would like to suggest that Boost have separate NGs for each individual library. I also think, for each individual library, a separate user and developer NG should exist. While this will lead to many more NGs, it will make it much easier for users/developers to have concerns addressed for a particular Boost library, and to have the implementor of that library address those concerns. Also of course it will make it easier for people interested, or working with, a particular Boost library, to go to the appropriate NG to read about any issues brought up regarding that library. This is especially important as more Boost library are developed. If a post deals with issues that can not constrained to a single library, it can go to the current 'user' or 'devel' NG as appropriate.