Someone has told me if I used an easier means of commenting and didn't moderate comments before they appeared I'd probably have more commentators.  That's true and I wouldn't mind having them but it would also mean what it did when I didn't moderate comments that people would use my blog to lie about other people and insult them when it wasn't earned or productive.  There are a million sites online you can do that with the tacit approval of the owner, this isn't one of them.   I choose to not to have that kind of site.