The "admin" username is a bit of a hack; I would suggest that we add an optional Username field, and people can use either to log-in.

We probably also want to have a boolean field, ValidatedEmail, and the code to set it properly. One tricky situation - what happens when people change their address? Does this make users lose their "validated email" address credentials? If so, should all page comments be hidden while they re-validate their address?

The other site of this is I think that page commenting should still be doable from a single form - well, in as few steps as possible. Multiple steps create "cognitive overload" that make people think "argh, forget it, I won't bother commenting".

One possibility here is to add the tabbed layout just below the comment field, with different action buttons. I've tried to mock that up in the text below - 3 times, once for each tab. Using a radio button would be an alternative that might fit better into the post comment form - the tabs can get quite large, and having a tab-strip in the middle of a form might confuse people.

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