[AnthonyMouse]

> The down-side is that if you decide to move registrars, that still complicates things. What if the new registrar refuses to issue a new cert without a hefty fee?

Then everyone stops using that registrar and they go out of business.

> Or what about revoking the previous cert?

You're asking this as if there is some kind of functioning method of revoking certificates already. If anything this makes it easier because it could be plausible for clients to somehow retrieve who the registrar is for the domain and then only accept certificates signed by that registrar.

[eksith]

If the popularity of GoDaddy has taught me anything, it's that people use what they know; not what's good. The list of companies that should have gone out of business is as long as the number of years since commerce began.

The fact that they still stay means (and this is relevant to the EFF project as well), creating alternatives is just as hard as making enough people know and care about them.

The registrar check per domain is probably the biggest plus in having it act as CA. Of course, that adds overhead to the registrar which they may not be willing to accept (margins and all that).