This is how you get rid of word verification stuff on Blogger.
Just go to your dashboard and click Settings. And then from the drop down menu that appears Posts and Comments.
Scroll down to the question "Show word verification?" and click no.
That will sort it. But you do have to click the orange save settings button at the top right.
PS If you think I have been wittering on about this before - you are so right! If only Blogger would change the default option!