They could make their website a bit clearer on this, I agree. But I found my way through it without too many prblems.

If you click on the link I gave, you get a headline about Kim Howell's Monday "visit", and if you click on that you get this page.

A few lines down from the top you get a bit where it says "Post a message", next to "Subscribe". If you click on "Post" and you aren't already logged in they ask you to log in. (And that's free, it just means having a username and a password). "Subscribe" just means register so that you have a shortcut to the discussion or something like that. (I can't see why they us these jargon words instead of plain English.)