Many thanks to Sheila (also known as Orange Esmeralda) for suggesting help controlling the dreaded Robot in the comments section of the Blog.
When having to deal with the "prove you're not a robot" on someone else's blog, Sheila has had success with ignoring the command and just typing in the comment and publishing it. I have found that this works only randomly for me but it is worth trying.
Sheila's brilliant suggestion that, in order to get rid of the robot on our own blogs, we change our settings in Posts and Comments works like a dream. This is how to do it:
Open DESIGN on your blog page
Scroll down to SETTINGS - lower left hand side of page
Click on POSTS AND COMMENTS
Go to Comments location and click on the adjoining box
IMPORTANT!!! Make sure, after choosing EMBEDDED, you go to the top right hand corner of the page and click on SAVE CHANGES.