It's as easy as 1,2,3

1. Write your comment in the box - Click on 'Post as'

2.The Disqus option should come up.·
Click on Register comment.·
A message will appear saying that a Moderator will approve your comment before it appears on the site.· Close that window.

3. You will receive an email asking you to verify your account.··· Once you verify, you can post comments and share knowledge to your hearts content by using your registered user name and password

Don't forget that you can also post comments to your facebook, twitter and other social media accounts