One notable still-missing feature, unless I missed it, is the ability to track users in history – to find out how many users there were on an arbitrary date two years ago, for example, or to find out when a given user subscribed to the list. The List Monthly Health item is closest to this (and a great idea), but I’d also like just a list of users, maybe on a monthly schedule, or maybe just record subscribes & unsubs. Yes, I know – scratch the itch & submit upstream! on my to-do list.

I do love the idea of the “High School Yearbook”. I wonder if the reverse could also happen – Most Well-Hidden Lurker?

All in all a very worthwhile effort.

The basic idea is to get an archiver running and add on the top of it the forum-like feature.

Maybe Nicu is right and adding the facebook-like feature (like/dislike) are of no use.
But I do think, tags and keywords are interesting even if only few people set them.

Anyway, the idea is to not change at all the current usage of mailing list but adding a new interface (web-based) to them.

This would also allow for example to just send an email to a list without registering to it and still be able to participate to the discussion.

http://www.google-melange.com/gsoc/project/google/gsoc2012/syst3mw0rm/31001