New Mastercard branding

I saw today where Mastercard has followed in the recent steps of Intel, Volvo, and Kodak by updating their logo. They also went a step further and changed their name to MasterCard Worldwide from MasterCard International and introduced a new corporate tagline, "The Heart of Commerce.". Unlike the other brands I listed, I can't say that I am a fan of the new logo. I just spend all my time trying to figure out what the new circle over the middle of the logo is supposed to represent. Their branding site describes the circle as "intended to reflect the company's business as a franchiser, processor and adviser". Somehow I don't get all that from a circle. What are your thoughts on this?