open graph image being overwritten by gravatar logo?

Question

example page; http://www.c-art.org.uk/2011/07/01/jenny-abbot/

some reason the gravatar image is overwriting the posts featured image thumb (100x100). Nnot sure how its doing it! How can i get rid of it?

<meta property="og:title" content="Jenny Abbot" />
<meta property="og:description" content="C-Art — Cumbria Artist Open Studios, Jenny Abbot Artist Index PaintingC-Art"/>
<meta property="og:url" content="http://c-art.modernactivity.co.uk/?p=1254"/>
<meta property="og:image" content="http://www.c-art.org.uk/wp-content/uploads/Summer-at-Sea-Wood-100mm-100x100.jpg"/>
<meta property="og:type" content="article"/>
<meta property="og:site_name" content="C-Art"/>

best, dc.

Answer 1

I can't see a Facebook share button on the page you are talking about, but I ran this through Facebook Lint and it appears that your Open Graph meta tags are working correctly.

Answer 2

This post on wordpress.org was useful especially at the end, where you can view page source to see if the gravatar is being called and hence facebook is picking this up when posting from twitter feed, and displaying a blue gravatar instead of the post image. I switched off the plugin share and follow, however now I need to trouble shoot this.