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by AndrewDucker 5612 days ago
Both Livejournal and Dreamwidth use OpenID to allow commentors to claim an identity. I also use it to log in to Disqus, Hacker News, Slashdot, Stack Overflow, and a bunch of other sites. Oh, and to leave comments on a bunch of different blogs.

It's not the answer to everything - but it still works remarkably well for many.