First go and read the article.
In the past I’ve exposed a problem with the Blogger platform and using captchas with OpenID or WordPress credentials. The issue is that if one uses OpenID or WordPress credentials on blogger, even if you correctly type in the captcha, you cannot login with the foreign credentials.
And when I think about it, I have wasted a fair amount of time trying to get it to work on the blogger sites that enforce captchas. Fortunately there aren’t many sites that enforce a login of some sort. But there are some sites where I am FORCED to use my blogger credentials. It’s annoying.
And Blogger has shown no interest in fixing the problem. So once again, I invite you over to WordPress.