absolutely do NOT roll out the username changes!

i know this has been posted a hundred times but it needs to be emphasized how stupid and worrying this decision is. the security will get a lot worse, account selling and stealing will become much, much worse, itll be frustrating if you cant get the name you want, people will be hoarding certain names with alt accounts to sell them, and people with common usernames like "mark" will be FLOODED with friend requests that they dont want.

this is such a stupid change. if it has to be implemented, make it OPTIONAL.