I loved this comment on Vitalik's post:

"Vitalik,

Hey, I was bummed to hear you didn't have a steem account, you know... they're free! So it's really easy to get one, and you can just start posting right away! I mean, you don't have to pay anything to post... you just sign up and start writing. There's a lot of great content there too! I'm sure you're busy with Ethereum but if you have a little time... I mean with 3 second block times, you won't have to wait to see your post go live, and then, when people vote for you, you'll get some extra Steem, so you'll never have to worry about bandwidth again! :P Well anyway, I secured a couple of accounts for you, since you pretty much announced to the whole world that your name wasn't registered there. :) Hive account@vbuterin & Hive account@vitalikbuterin. You're welcome!"