Using HTML in comments

I've noticed that many people are linking to articles in their comments (which is excellent) and thought I would share some basic HTML for Optimates who haven't been learning HTML from chipmunks (like our esteemed colleague Prometheus). When making a post, you get a handy formatting bar which allows you to create links, and add various emphasis to your text (italics, bold, etc). When posting comments, however, you get no such luxury, but can still type in the actual HTML code to make such things happen. All of the formatting works by placing "tags" around whatever text you want to give a specific format. Tags are bits of text inside carrot brackets placed at the beginning and end of the text in question (although the second tag gets a "/")
For example, in order to make a link out of text in your comment put the following tags around the text you want to be linked:
<a href="http://the-URL-goes-here.com/">This is the link text</a>
The quote marks are important and must go around the URL inside the first tag.

For bold use <b>This text will be bold</b>
For italics use <i>This text will be italic</i>
For underline use <u>This text will be underlined</u>

The link tags are particularly useful because they save people having to copy and paste a big messy URL. Plus they are great for pissing off Cato.