Wordpress - Inappropriate Facebook Posts

I recently launched my own website : www.edwitty.in

Whenever I add any new posts, these posts are shared on facebook automatically due to the settings done in the backend. But in the last few posts, I have been seeing some kind of weird code in the thumbnail of the corresponding post on facebook.

For reference, please visit this facebook page.

Also, the formatting of any of the posts is lost (i.e. there is no change in paragraphs, or different colour display etc.) when those posts are put up on facebook by default through wordpress. This loss of formatting also occurs in the mails sent to the subscribers via the newsletter of my website.

Can somebody suggest me a solution and help me out ? I'm a bit directionless here.

via Chebli Mohamed