Why doesn't divvs recalculate one's score when one has added another identity after the initial calc?

We do! It takes a little while, but new identities should show up in your rating within an hour or so, right now.

During this alpha phase, we've worked hard to get new users an initial rating as soon as possible. We're working to get new data added quickly too, though.

Keep in mind that Divvs Ratings will constantly change as we find new information, so even if you don't change your identities your score may move around.

Thanks for trying Divvs, and for the feedback.