Saving private keys in e-mail drafts should not be "common" for a trustworthy person on this forum. Getting one's e-mail hacked and forum account compromised literally means you can't trust the user to be who they claim to be.
It should not be that common to someone who understands the importance of it, but its acceptable story and people do sometimes store keys in email drafts. And its really an over exaggerated statement to say that the account is just as thrash now.
Right. It's not like any scams or any other sketchy shit ever happens on telegram. No one ever complained that they got deceived on telegram by some impersonator. We should definitely start using telegram for Bitcointalk account ownership proof because this can't possibly ever go wrong.
That was just an suggestion for this special case where rest of the proof is compromised. I don't give a shit about telegram and still definitely think signed message is the best way to prove ownership.