Well, this is one of the strangest things I've seen so far.
We've been using All In One SEO Pack for a long time on five different websites using four different themes. All of them were working fine until something starting messing up on one of them. When we post a link from our http://pleiadians.net website (any post) to Facebook, the title shows correctly but instead of the meta description, it now pulls copy out of one of our ad widgets. The page source correctly shows the meta description. We checked other post done previously which also used to work but all of them now pull ad copy from our Hyptalk ads displayed in one of our widgets.
We checked post from two other websites running different themes and the meta descriptions are posting correctly from those sites.
Last month, we were able to post pages from this website and the meta description showed correctly. What changed? We haven't added any new plugins or anything. We haven't actually done anything new in a couple of weeks.
Here is the newest post that we tried putting into Facebook (many different pages, groups, profiles) and every time it shows Hyptalk instead of the meta description. We also tried this on two different browsers (Firefox and Chrome) and it produced the same result in both.