This post service explains how to create it:
(How did I create that? Using Google+'s novel embed feature. Do you lot lot similar it? Should I build to a greater extent than quick-tips similar this?)
Something I haven't been able to figure out even as well as then is whether this happens for all posts (including edits of existing posts) or only for newly published posts. If it's the former, so getting your posts right before you lot lot upshot them is inwards all likelihood to a greater extent than significant than ever.