What's the hook JetPack comments uses?
24 hours later and it still hasn't show up yet.
Not only that, but when I post using comments on someone elses site, Matt's for instance, it can auth/sign in to them but doesn't find/download any of the details from my WordPress, Twitter or Facebook accounts.
And I just noticed it doesn't remember my details until I enter the email address, although I have just posted a comment, and then it makes up its own mind to insert my http://gravatar.com/socialstrategyuk address, instead of my website.
I really do hope most of these things are bugs and not had-coded by intention.