How to change nick?

The rules state that you can not change a nickname, if you have posts or comments. Everything is logical.
Imagine if UFO's will be called differently. He used to be known under one name, and then it was changed to be called... not once. With users exactly the same, not to be confused with the other, to change the names is impossible

nick change. In rare cases. Write To Ivan Gabrovo.
But your case is unlikely to ride, changed all sorts of abusive nicknames at the request of their owners.

I would not mind, but is unlikely to introduce this. This will cause confusion.

Change nick if there are no posts and comments, otherwise I suggest to get a new one through the sandbox.

But I wonder if I want another nickname and give himself an invite, but don't want to blochii old account, because I do not want to lose the articles and comments + some people write on old account under the old articles, it will be considered a violation for the creation of a virtual or not?