What is this image?
The image to the left is a way to ensure that a human (as opposed to a computer) is using a specific webpage, a so called CAPTCHA. It's similar to a password. Only humans are able to enter it.
To submit your post, go back to the site you came from and solve the CAPTCHA by entering the characters you see.
I am blocked, what now?
The site might not have set up Mollom correctly. If you let us know, we can try to get in touch with the site owner. You can try to do that, too, by looking for a contact form or e-mail address on the site, and informing them about your blocked post.