I am nagging again. Do you know you only need blog comment word verification on if you are getting a significant amount of spam comments? Try turning it off for a bit and make your blog a friendlier place. I had mine on for a while and then switched it off and now barely get any spam comments. I did get that 800,000 word religious one though.
But how unsympathetic is Blogger/Blogspot? When I mistype the word verification, as I often do when commenting on other people's blogs, I would have thought the next try would be a bit easier. Nope, it is usually harder and gets progressively so. There are more letters. Closer together. More odd shapes. Perhaps this is necessary to defeat spammers, but I doubt it. Totally random I suppose.