Extra spam protection?

Hi there,

I’ve noticed lately that a lot of random email addresses I don’t know of have been registering themselves with my blog. I’m assuming these are spam addresses, however I didn’t think anyone would be able to do that, because you need a valid email address in order to confirm…

I also have Askimet which does a great job of capturing a ****load of spam. However – what I wondered, is if there was a way of including a “graphical validation” tool when people try and post comments, so that WordPress would handle that before the post was ever accepted?

Thanks,

:-Joe