Anyone a bit uncomfortable with the fact that Live Mesh uses Passport?

I love the idea behind Live Mesh, I genuinely feel that it is the future of the internet, the whole concept of writing applications for a mesh of data and devices as opposed to one device with one set of data is totally amazing!

But, and this is a big but, everyone who wants to use this needs a Microsoft Passport to use it. Shouldn't there be a general identity API so that people who want to use their Yahoo ID or their OpenID or their WordPress Login, Typepad, etc. etc. be able to use the login they've been using forever?

Just throwing it out there.