Problems Commenting?

I have been told today that some people are unable to comment on the blog as you have to have a googlemail account to do so.  I'm really sorry if you've been trying to leave a comment and haven't been able to, I hope to find a solution to this asap.  I have also been told that it is hard to find this blog on google, and that is another problem that I'll try to sort out within the next week.