It’s been brought to my attention that Skype offers a lot of features similar to Google Voice’s. Skype also allows Skype-to-Skype sending of files, even from a mobile phone. That’s cool. The problem is, if I go with either Google or Skype, I get one number I’m supposed to have all of my current contacts use. What if I want to switch services? Do I have to start over with a completely new number?