My Personal Learning Network - PLN

So I have gone on the net to find out just what this whole PLN thing is all about.  To me it seems to be a map of information and networking to make learning easier.  It would be a menu-like network of informational sites for certain topics of study or career.  I have started to put one together in Wiki form, just to see how that would work.  Anybody have any other ideas, or am I way off here?