guest comments

When posting a new blog, there used to be an option to allow/disallow comments for each blog post. This is even shown on your demo page. It does not appear, however, on my site.

Also, in going through settings, there is nowhere to allow/disallow guesrts to post comments. Is it allowable for guests to post comments. Right now, it looks as though you have to register and login first.

Thanks,
Andrew