I just saw this in a blog I frequent. Google Noticeboard
Google Noticeboard is an application that helps people access and share information over the Internet using public digital noticeboards. Using Google Noticeboard, communities can access a variety of relevant information. People can create text messages or record voice snippets and post them to one or more noticeboards.
Think of it like a private ChiefDelphi.
Noticeboard is a firefox extension that is installed and configured on shared computers by an operator. After the initial configuration, the Noticeboard application enables community members to exchange information over the Internet without an intermediary. As a part of the configuration, each community Noticeboard is associated with an email address and a list of contacts
One use would be for teams that don’t have a website or team forums.