Back around March / April time frame I upgraded my mobile phone plan to the new unlimited minutes option from AT&T. I was using my mobile for just about all calls and my usage on the phone shot up. Then in June I was able to make outbound calls via Skype but have my caller ID come up as my mobile #. That change allowed me to use my computer to make most of my outbound calls. In July my mobile usage peaked, but towards the end of the month I began to seriously use Skype over my mobile. I mean why use my mobile when I am sitting at my desk at work or at home where I spend most of my time on the phone anyway? Because of this huge decrease in the usage of my mobile I am switching to a cheaper plan when my billing cycle changes next week. I will save $40 a month by going to a 900 minute plan with rollover. That might even be over kill at the usage rate I am going but I don't want to chance it. The cost of Skype in and out for one year is around $61. I make that back in under two months. Now all I need to do is wait for more friends of mine to use video chat and I won't need to make any calls at all!