yesterday, i could not post questions or answers on here. Why is that?

Answer 1

truth is, you have been posting under several names. I suspect the name checker got full. Today you have posted under several names. Besides annoying, that doesn't help you. Teachers learn what students can do, or not, and changing names the teacher is at a loss. It is not nice to annoy teachers, ask your mom about that.

Answer 2

whatever

Answer 3

huh - even changed names on the same post. what a maroon...

Answer 4

Yep! S/he had at least 20 posts with at least 5 or 6 different names! <shaking my head>