Commenting in WordPress blogs

I'm a bit n00b when it comes to commenting on blogs. In case you don't know, you can do some HTML tags in them, for example if you do:

<blockquote>this is a quote of something someone else has said</blockquote>

then it will look like:

this is a quote of something someone else has said

Sigh, just found the full list of acceptable HTML tags that you can put in a comment on a wordpress blog: http://en.support.wordpress.com/code/ so there you go.