Quite a few adgrunt members have asked so nicely that I turn the anonymous (non-members) comments off.
Anonymous commenters tend to be truly off topic and/or 'radical' or perhaps inflammatory. I don't see why one can't be brave enough to post such things under ones established username, an identity here that may or may not be revealing who you are in Real Life™.
I agree with them, if you want to say something, it only takes a second to log in, and with over 18000 members already signed up, we shouldn't have this many anonymous posts.
There's nothing to be afraid of, as you can make up any silly name you'd like, not reveal your emailadress, etc. It makes discussion easier when there are different usernames saying different things, rather than a bunch of Anonymous people duking it out.