Problem with duplicate content

@samilyjones Hmm, I’m not sure what “Tags duplicate title” means. Can you give me some more information?

“Duplicate title tags”.

In Google Webmaster Tools is a section called “HTML Improvements”. In that aparatado duplicate with the same content appear urls:

https://www.informacionyarte.com/?comment_mail%5Bmanage%5D%5Bsub_new%5D=0&comment_mail%5Bmanage%5D%5Bsub_form%5D%5Bpost_id%5D=10327

https://www.informacionyarte.com/?comment_mail%5Bmanage%5D%5Bsub_new%5D=0&comment_mail%5Bmanage%5D%5Bsub_form%5D%5Bpost_id%5D=10329

https://www.informacionyarte.com/?comment_mail%5Bmanage%5D%5Bsub_new%5D=0&comment_mail%5Bmanage%5D%5Bsub_form%5D%5Bpost_id%5D=10652

@samilyjones You should use Google Webmaster Tools to block access to ?comment_mail:
https://support.google.com/webmasters/topic/4598466?rd=1

For example, you can add the following to your robots.txt file to block the Google Web Crawler from indexing specific pages:

User-agent: *
Disallow: /?comment_mail*

There’s no reason for Google to attempt indexing of those pages.