How to show my forums logo in thumbnail when I share a link of my forum on facebook?
Don't understand what you say
Even the thread subject is also replaced with site name on posting. I think facebook has changed links posting
Facebook created the Open Graph protocol that will allow you to customize your site's meta information when someone posts a link. It's documented
here on the Facebook Developers site.
I've set up meta og:image, but when I share on my fan page it don't show up. But when i Post it on my profile link shows the thumbnail
found, the open graph should have to be included in show thread template