One of the most compelling features of Facebook is that it helps you catch up with or stay abreast of content channels (e.g. groups, causes, friends, modules, etc) at your leisure. It would be great to allow Bitweaver users to subscribe to wiki pages, users, blogs, etc that fed into their own personal rss feed on what they are subscribed to. The "Watch" feature already available with Bitweaver could be customized to then allow by module settings that also allowed a user a options allowed posting to the feed only, a daily summary of changes to a particular page email, as well as an email with every change.
This would address the navigation issue that large complex sites have and make end user training easier by drawing comparisons to popular social networks.