I feel like I need to clear this one misconception about Blogger up - most people that follow my blog think that you cannot comment if you do not author a blog yourself.
That is incorrect.
If you click on the post title and scroll down to the bottom, there will be a feature that allows you to comment.
You do not need a blog, or even a blogger account for that matter, to post a comment.
In fact, you can even comment anonymously.
(Although I'd appreciate it if you put your name at the end, eg. -kim)
I hope this clears thing up for everyone!
Comment on this post with a "hello" and test it out ;)