I have no way of knowing although I suspect a few have. On the other site I was on you always knew if somebody blocked you because you could try to click on their profile but got a note saying they blocked you. How do you know on GAG?
Most Helpful Girl
There is no indication until you try to contact them or post on anything of theirs.
If you try to share on their question, you'll see a message telling you that either they blocked you, or you have blocked them.
If you try to comment on their opinion, same message will appear.
If you try to send them a private message, same message will appear.
There is no other way to tell at this time.
This information can always be found in our FAQ, please check it out :-)2