I've finally got on my bum and modify the code for the site to permit guests to post comments. So, you no long have to become a member to have an opinion.
I like Slashdot, so I've decided that your posts will credited as "Anonymous Coward". After all it isn't that hard to get yourself an ID. I may try to make myself sit down again one day and modify the site further to allow guest to give themselves a handle when they post, but I may not. It is hard to get motivated to sit down and recode the site.