Why do some posts seem to not accept answers (from me at least)?

You have been blocked. People use multiple accounts on here, so it's most probably a few people who seem to block anyone they disagree with.

you are not giving freedom of press===1st amd

You're an ambulance chaser and probably a desperate criminal too.

If there's no space for your answer, you've been blocked by that asker.

If the asker is Anonymous but your answer won't post, you've been blocked by that asker.

If the asker isn't anonymous, and there is a space, and you still can't post an answer, it's a glitch, and will eventually resolve itself though it can be frustrating while you wait.

sometimes ppl block those who disagree with them.

If its only some then its Due to the Asker Blocked you for some reason Rather you Believe it or not that is what Happen

Usually, you are blocked as everyone else has mentioned already. If the person asks the question using their Yahoo Avatar you will not see an answer box. If the person is asking anonymously you will see the answer box but get an error message when you try to submit.

I also never seen this Privacy Violation before. That is something new to me.

Because the user has blocked you as have their multiple accounts.

Could be that you annoyed the original poster, and they've blocked you.

Yet another unfortunate technical issue with the site. Sometimes if you refresh it will correct its self, but not always. Thankfully it doesn't seem to happen too much.