You have to be logged in to see the section in question, which is where more sensitive stuff is placed to avoid it being seen by any casual visitors to the site. I'm not sure but it may also be that, along with some other feaures of the site, you have to have 15 posts or more before you can access it.
If you are a regular contributor to discussions here, 15 rolls posts around pretty quick.
EDIT - ah I see Zythyra beat me to it