Blizzard President Mike Ybarra tweeted about a recent fix the Diablo 4 team made related to the recent rash of gold seller spam.
It seems the reason some players were getting so many spam messages was a bug that allowed others to see your full battle.net ID. With it they could then friend request messages containing links to gold selling sites, like this:
I have been getting them almost on the hour since D4 release
by u/FPS_Casey in diablo4
Luckily, the bug has now been fixed and Blizzard will be taking action against the accounts that used this method.
It’ll great to see these finally disappear!