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Absolutely agree with you, Mike! I already removed unnecessary ".com" and agree those tag page titles does not give much idea for visitors. Unfortunately, I do not have much control over those tag pages titles in WP.

Thank you for your reply, Charles!

What do you mean by "it doesn't even look correctly formatted"? Can you exmplain what's wrong?

I'm using Wordpress SEO to manage all on-site seo formatting. Also, do you think having twitter card, google authorship and open graph tags at the same time is bad for SEO?

Thank you for your help, Mike!

Now I will try to optimize titles as much as possible. Also, do you think removing my long site name from titles is a good idea or I should keep it?