Did you know you can put links in your comments? If you want to provide a link to something when you write a comment, you need to put the link inside an anchor tag. What works on a web page will also work in the comment box. Like this:
<a href="http://mylink">my interesting link</a>
Blogger will recognise the anchor tag and turn it into a proper looking link when it posts the comment. So for example you might write:
Stephanie blogs on writing a novel about the amazing Hatshepsut at <a href="http://hatshepsutnovel.blogspot.com/">her interesting blog</a>.
(I picked Stephanie's blog at random from my followers. I hope you don't mind Stephanie.)
Which, when it appears after you post the comment will look like this:
Stephanie blogs on writing a novel about the amazing Hatshepsut at her interesting blog.