Let me add a suggestion that I think would make the biggest impact without much more work.
Joel, instead of being a "secretary", you can write an "OpenACS Weekly News" mailing, where you'd summarize what happened in the project that week.
Anyone with suggestions could e-mail them to you, and the rest you'd gather from the OpenACS forums, which you already follow anyways.
I find the Debian Weekly News extremely useful. It lets the entire community know what's going on at large, decisions are mentioned, suggestions told. All in a simple, easy to read weekly post.
-Roberto
