SETUP TIPS FOR DUMMIES

Project is very good and going fast but documentation is poor. I recommend following tips for social stream project. You must consider Rails 3 Gemfile. Social stream is an gem and also engine. You can consider daily updates on project. Project recommends gem 'social_stream' But you can start old versions and have negative experiences for project.
I recommend

gem 'social_stream', :git => 'git://github.com/ging/social_stream.git'

and you can run

bundle update

rails generate social_stream:install

commands on project. Also you need image magick gem, you must download and install image magick library from http://www.imagemagick.org/script/download.php using ./configure && make && make install commands. You must use gem install rmagick to install rmagick ruby gem. You must use ldconfig /usr/local/lib to use image magick on social stream project properly.