Somehow CF is able to see and capture it.
if like me, you see neither the check box, nor the text beside it, just remember it is located just below the "Yo" of "Your avatar is currently inactive.".
Just click it once (it will toggle back to off again if you double-click it)
You will know when you are over the check-box in IE because the cursor icon changes from an I-beam to an arrow when you are over it.
Once you have clicked it, scroll down to the bottom and click 'Submit'