I have never been given a notification that I have been blocked, I don't think. So how would I know to block someone back? And the fact that they are petty enough to block doesn't mean there is reason for me to be equally petty. Especially since... what do I get from blocking them? They already blocked me, so we already can't communicate.
No one ever blocked me! I'm a nice girl. I once accidentally blockd a guy I had never talked to before, and had to unblock him again. If I remembered who he was I would've sent a message saying sorry lol
If it's some one that blocked me over being butt hurt and vial in their comments with out allowing any rebuke about an opinion I shared I usually will go on and block them. I am well aware some people come here looking for some type of help and I will try to accomplish that when ever possible. Juvenile attitude of I'm never wrong has no cure outside of growing up. So rather than letting them unblock me to come again and be the Bain of my night I spare myself the aggravation.