skype groups

I am interested to know what goes on on the Skype groups that are created here and what happens when someone tells you to connect with them through Skype. I have just recently started adding people to my Skype and I wanted to know what the expectations are. Do you do video calls or voice calls...

So the other day I have found multiple sites and sellers for email lists. Is it worth buying email lists? If so, what would be a reasonable price range? And yes, I do have a server that can send out up to 1 mil emails a day.