What happens when you reply to someone on twitter then immediately block them? I understand this means you cannot read their posts, they cannot read your posts, but everyone else can read your reply. Furthermore, the target doesn’t know that he has been replied to.
Do I understand this properly?
When you block someone they can’t reply to or retweet you. They can still read your tweets.
If you block someone, they cannot read your tweets. (I say that as someone blocked by a few people on Twitter)
ETA: you can’t even find them in Search! That I did not know. #@gehrig38
ETA2: to the OP, yes, you understand properly. responding and blocking is just a childish way to get in the last word to everyone but the recipient. that said, you can obviously go look at someone’s tweets without logging into Twitter.
Yes, they can. The most common way to discover someone has blocked you is to try to respond to or retweet something that someone you follow has retweeted. Then you get a message that they have blocked you so you aren’t allowed to reply/retweet.
If you are in someone’s mentions and so is the account blocking you, yes you will see that you are blocked and mentioned, but you cannot directly read the tweets of the blocker.