1) 50c/min overages. yikes. Are you kidding me?
2) prorating your plan when you upgrade: Are you kidding me? buried in their FAQ is what happens when you change you plan... If you have 500 mins, change your plan to unlimited half way through the month, they say you were only allowed 250 mins and charge you "overage" if you talked more than that at 50c/min when you switch over to "unlimited"