Why is yahoo answers asking...?

There's a button before you add a comment or question, at the bottom with the facebook "F" at the bottom.

If you click it off it doesn't open FB.

But it doesn't go away and is extremely annoying to keep doing it.

At the bottom of where you submit your answer is a tick box that says to share with Facebook. Untick that box. It should save the new setting so you only need to do it once. HOWEVER, if it doesn't work, clear your cache, cookies and temporary files and restart the device. That should keep your preferred setting.

There is a little box just above the 'submit' button. Just remember to click it off before you submit. If you forget, just close the other pane when it appears. You don't have to log into facebook for your answer to go through.

You just turn it off.... That's it