FTR, it happens ALL... THE... TIME. Court issues subpoena saying give us everything you have on this tweet/message/posting or be held in contempt. Company the

FTR, it happens ALL... THE... TIME. Court issues subpoena saying give us everything you have on this tweet/message/posting or be held in contempt. Company then responds with all info on account IPs, logins, timestamps, etc. Unless your OPSEC is impeccable, it's usually quite easy to identify a user and only requires the permission of a court.