Blogger Latest Captcha feature is broken

Responding to criticism, Google has quickly created another anti-blogspam feature. If Google spam classifier identifies a blog as spammy, Blogger will prompt the blog author to solve a CAPTCHA before creating a new post.

For some unknown reasons, one of my blog was designated “spammy” and so I am unable to post to this blog.

When I am trying to create a new post using BlogThis extension, I get the following HTTP 500 error:

org.apache.jasper.JasperException: For anti-spam verification purposes, please login to Blogger.com and create a post on your blog. You will need to solve a CAPTCHA.

When I try to create a new post from blogger.com website, I get the following error:

http://www.blogger.com/post-create.do Blogger: An Error has Occurred

We’re sorry, but we were unable to complete your request.

Blogger, can you please get this fixed soon. And how do you decide a blog as “spammy” ?