Port 5596 open and skype worm/trojan??

I believe that I had once read on some website somewhere, of whose URL that I cannot recall, that the Skype license agreement is a carefully crafted legally worded agreement that when translated into regular people language says that your using Skype gives consent to allow Skype to use your computer as an ad hoc relay node. What I was reading was something about why CERN (?) didn't allow it's employees to use it, because they were a big bandwidth pipe and many Skype connections would be routed through their network and they didn't like that. I think that these connections being initiated not necessarily under the cognizance/awareness of the local user also prompted organizations like the US Dept of Commerce and possibly other Gov't agencies to forbid use of Skype on its Government-owned/issued computers. I wish I could quote you specific citations of where I saw/heard/read this, not that they would necessarily be authoritative sources (I read it on the internet), but they are probably more authoritative than my post here! Regardless, that is why I refuse to install Skype on any of my computers or allow other family members' computers that have it installed onto my residential WLAN. You might try googling "security hole Skype" or similar search terms and you might find these links that I seem to recall from the distant past.