It's a great question.
It's outside of the scope of our business to say if Twitter and Facebook could leverage blockchain technology.
I have heard anecdotally—I know the plural of anecdote isn't evidence, but I have heard enough anecdotally that I'll say it—that there are all kinds of interesting applications of blockchain for ID verification. That could be a space where, when you're at the account creation point, maybe there's an opportunity to integrate some form of secure ledger technology underlying the account verification step. This could ensure that people are using their real names, their proper IDs and things of that nature, so that there are fewer anonymous...or fewer accounts that are created specifically for the purpose of engaging in misinformation and the like.