Meta tags plugin for wordpress

I read here on digitalpoint that meta tags have still litlle importance.

Would be the same meta tag for the whole blog ok or should I add different tags for each post? (I would rather just add one)

Which plugin for my wordpress blog is the best to add this tags. I was searching for it but there is just too many of them to decide.

 

The only meta tags that have any use is Meta description. You can add them very easily without the need of a plugin.

http://codex.wordpress.org/Meta_Tags_in_WordPress

 

I see. This was really easy. Thank yoo