The transition is exactly the time for impersonation I hope they will protect some usernames that are shared by no other users (eg the name of artists) Malici

The transition is exactly the time for impersonation I hope they will protect some usernames that are shared by no other users (eg the name of artists) Malicious users could register the Twitter handle of popular artists, to impersonate them or to request a fee to have it back :/ I hope they thought that out.