How to create the clickable link
This is what you will need to type:
<a href="URL of the target site to click to">text you want displayed</a>
Example:
If I wanted to refer to this blog post and leave my URL on a Comment page I would type:
<http://geekstuff.allnewadventures.com/2011/11/titbit-html-adding-hyperlink-clickable.html">Adding a clickable link in your blog comments</a>
This will create a link that people can click on to go to this post - Adding a clickable link in your blog comments.