elusiveat

I doubt it's as cut and dried as that, but the argument is not entirely without merit, either. We do see that creation of accounts is one of the points at which we try to choke off spammers, and it is possible for a domain owner to create an infinite number of openid accounts.

I'm not personally convinced that the ability to use HTML markup adds any real value to email or blog posts, so it doesn't seem like much of a loss.