The nice thing about a linkblog like this one is that I am always inspired by other blogs to write something about on my own. Some months ago when our baby was just born, I was lazy and just linked to other articles, but most of the time I get inspired by other blogs and write something about the subject or react on my own blog.
In my opinion this is much stronger than using comments in a blog. So I encourage you to write on your own blog if you want to react something. There is a whole discussion about the purpose of comments on blogs and I am on the opinion that they have no purpose. Matt Gemell has a very nice post about why to not use them. The follow-up whith reactions from around the internet is awesome.