Ask YC: Feedback on my new project http://www.askurpals.com
I have seen lots of good information getting exchanged (things like answers to common questions, reviews etc.) on internal mailing lists - especially on my "off-business-topic" office mailing list that eventually gets buried in individual mailboxes and lost. It's a shame, particularly because the information is of really good quality (no spam/trolls since it's on a closed trusted mailing list)....