I've just read where Windows Phone doesn't use MMS by default, which I guess is more cool than SMS.  I looked it up and see that its about multimedia messaging, but I guess I don't get it.  I've read where group messaging with Windows Phone isn't enabled.  I don't get that at all.  I've got a group on my WP, and easily send SMS messages to everyone on it.  I've just tested taking a photo and sending that to everyone in that group.  Works fine.  What am I missing?