Why does mylot have a copy and paste option if I can't paste what I copied

You don't have the ability to copy/paste until you reach 500 points. This reduces the amount of copy/paste spammers trying to answer a lot of posts and up their income without actually taking the time to contribute to a discussion with any thought or quality. The fact that you can use the control c function (copy) has nothing to do with Mylot, it's a feature of your computer itself. All mylot has done is restricted it's users from pasting into their textarea boxes until you've reached 500 points.

some uers only copy and paste the response posted by others and due to avoid this Mylot has banned this copy and paste command.infact they has taken a right decision by doing this.

I believe you must get to a certain level here before that will work. It was designed to prevent spammers from making frivolous posts.

human like to cheat if web allow the will make spam discussions