I haven't seen whatever announcements virtually it, entirely noticed it at that location when I was looking for something else - equally good equally thus I'm non for certain if it's genuinely new, entirely new-to-me, or I've been lucky enough to acquire a it before most people do.
You tin terminate forcefulness out uncovering it hither (or at to the lowest grade that's where I'm finding it): http://www.google.com/webmasters/tools/richsnippets
Once you're at that page, yous tin terminate forcefulness out mucilage inwards either an URL (your own, or individual else) or or equally good equally thus HTML, press preview - equally good equally the arrangement testament nowadays yous how the meta-tags, open-graph tags equally good equally other Google-supported structured data on your site looks to Google. This isn't significant for many bloggers - but is genuinely useful information if SEO matters for your blog.
And yous tin terminate forcefulness out also "Select the HTML tab to persuasion the retrieved HTML equally good equally experiment with adjusting it." - equally good equally together with thus examine out the upshot of making changes to your template etc.
The results nowadays you:
- A preview of how the URL looks inwards a Google search-engine-results-page.
- Authorship testing results - whether pick out a Google+ page or profile associated with the site
- Authorship email verifications results
- Publisher markup verification status
- An extract of the structured data
I don't flush acquire downwards to sympathise what all the results mean. And I'm non for certain if we tin terminate forcefulness out exercise something virtually all results that are shown - eg checking Blogger-hints-and-tips currently tells me that at that location are values for properties that I've never ready (eg blogid equally good equally postid) and also properties that aren't work concern purpose of the schema, eg:
- Error: Page contains belongings "image_url" which is non work concern purpose of the schema.
- Error: Page contains belongings "blogid" which is non work concern purpose of the schema.
- Error: Page contains belongings "postid" which is non work concern purpose of the schema.
But, much like the syntax-checker provided by times Facebook for checking how successful yous were at installing Open Graph tags I'm for certain that this testament motion a useful SEO diagnostic tool.