Re: security certificate popup in IE
If you are not logged in to Beesource when viewing/reading, you may see additional ads.
I always view Beesource logged in, and run Chrome 59.0.3071.115 currently, and I see a horizontal banner ad just under the Beesource menu, display ads down the right side, and a horizontal banner ad at the very bottom of the page. Here is a screenshot ...
If you are seeing ads mixed with posts, I am wondering if you are somehow viewing the mobile site with Chrome. Perhaps you could post a screenshot?
I can't help with IE.
USDA Zone 7A Elevation 1400 ft