Using <meta http-equiv=“X-UA-Compatible” content=“IE=8” /> mode in sites good practice?

Question

I\'ve recently discovered the joys of adding the following into the header of sites:

Answer 1

I'm using Discus, it is not compatible with older versions of IE. I got help they said to use content="IE-8" in my page code...

content="IE-8" also told my browser to change the sizes of tables and texts etc :p I changed to content="IE-7" it works perfect.