I have had some feedback that you haven't been able to comment without a Blogger ID. I have changed the settings so hopefully this will not be a problem now. You still might have to fill in the security text - which is to stop spam.
Under the comment box there is a drop down menu which asks for a blogger or google etc account. You don't need one of these- the very last option is anonymous. If you use that option but want to tell me who you are just sign off in the comments box.