I have simple wordpress site which contains quiz games. User go to my site www.site.com and there he can choose which quiz game he want to play. Every quiz game is a new post.
Every post contains copied description of a PC game (for example GTA V) and several questions. At the end user can see how many mistakes he made by answering.
The thing is, that my site contains a lot of post and every post contains copied description of a video game. Because of that my site was banned from google search for copy content. How can i prevent that? I should add nofollow tag to every post of my site? If so, how can i do that to every post at once?
You can use wp_head hook:
References: