Facebook is gradually (it would seem waking-up to the fact at last) , that we don't all want all data viewable to everyone and lots of posts, hack the uninterested off, as they waste time seeking posts that are of use to them.
Now whilst you can go and pay for a private social network with a plan with someone like NING who can take it all the way to a 'white-label' solution where you can shrink wrap in your own identity, the general user might just have a number of friends interested in a particular pursuit.
Facebook Groups: this facility now enables you to create a CUSTOM & RESTRICTED ACCESS BASIC GROUP
Instead of Public or the broad brush of everyone/friends of friends/friends only or just youself, this enables you to invite a specific group to access content, chat share and post between just the members of that group. Needless to say with Facebook's sometimes leaky first stabs at security we need to test to destruction but quick and easy to use at first look.
So say you do some research want to share with a few colleagues or friends this is what you do.
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