An improvement idea.

When a guest submits a comment, for example, putting as name, "Mark".

Then, the next comment he goes to write, the name field is empty again. It would be cool if the last name entered by the user would be remembered the next time the user writes a comment.

So "Mark" will automatically be filled for him. Do you think this is possible?

I noticed that you track things like Upvoting/Downvoting via the IP of the user, maybe you could do the same also for the Name?

Thanks!