[Air-l] is Internet a '"source" or a "medium"? - ignorant'squestion

[richard.ling at telenor.com]

I think that the answer is "yes." It is both.
  
On the one hand it is a medium when, for example, people are interacting
via email.  It is the medium through which they communicate.  When you a
looking something up, then it is a source.  

Rich Ling