Do your grammar, punctuation, and usage affect your credibility?

1. Two-question survey

Question Title

* 1. Does a writer's grammar, punctuation, or usage errors damage that writer's credibility in your eyes? Please explain your answer in a comment, if you like.

No, I don't notice errors

No, I don't care

Yes, but I forgive small mistakes, especially in social media posts

Yes, they damage the writer's credibility

Comment? Enter it here.

Question Title

* 2. What is the worst mistake that writers make? Why is this mistake bad?