Guild Wars 2

I created guild with unique name and nick. After few months sb created fake guild with different name but used the same nick! It’s patetic… After next few weeks I see 3 more different guilds with different names but using the same nick. Why if guild name is unique nick cant be? In my opinion more representative for guilds r their nicks then names. They r more visible for sure.

Because the nick (I assume you are talking about the tag) is 4 letters maximum, and there is a limited number of versions.

Why does it even matter though?
Your guild is still your guild. And the fact that as many as 4 guilds have the same tag, might suggest that it was not so unique as you would think, and it is very possible that it was already used by other guilds before you used it as well.