I confused some folks by posting our Tips to Commenters on the blog yesterday instead of at the top of our Categories over on the left, where it belongs. My bad.
However, due to popular demand, we can now tell you how to put linkable links in our comments. You have to type in the command, thus:
[url]www.domain.com[/url]
Give it a try, if and when you feel like it. I did it without the bolds, and it didn't work.