I could be speaking out of my *ss here but there are plenty of real people who tweet regularly but aren't given blue check marks. Thus the certain street cred level of having a blue check mark. (So yes it does signal the person is verified but it's not an option simply given to everyone.)
Yes but it doesn't verify the person. We've seen a exponential rise of verified politicians' accounts that are being run by bots and paid trolls that post crap 24/7.
