We Are Connected

I read a New York Times article about soldiers being connected to home through internet and cellular service.  The article brought up some interesting points about the connectivity that soldiers have through current technology.  Social networking sites such as Facebook, Twitter, Skype, and even Blogger allow soldiers to remain in touch with family members like they have never been able to in the past.  There are advantages and disadvantages to this connectivity... the article points them out, but what can you think of that would be an advantage?  a disadvantage?  Why would these things be good or bad for someone who is at war?