See this?: http://www.bettermeans.org/

This is an awesome thing, but it needs a lot of work. Y'all should go fix it! Their code hasn't been touched in a year, despite them opensourcing it under GPLv2 (it doesn't say it on too many of the files yet, but it's a fork of Redmine that's being distributed, and Redmine is GPLv2)

Its code repository is at https://github.com/Bettermeans/bettermeans

Two fixes that I can already point out that need done:
/app/models/user.rb lines 751 & 758: that should be activity_streams not Activity_Streams (it's case sensitive)
/app/models/setting.rb lines 271-272: the lines should be in the opposite order but the assignment operators in the same order, like this:

setting = find_by_name(name)
setting ||= new(:name => name, :value => @@available_settings[name]['default']) if @@available_settings.has_key? name

(the ||= operator is the one that applies a default value if a value hasn't been set)

I've stopped by their freenode IRC channel, but no-one seems to be responding.
And the software and the ideas behind it definitely represent something REALLY cool-
Occupy.net already uses it, at http://collaborate.occupy.net/