Opengraph W3C valid ?
- by mnml
Hi,
I would like to know if the opengraph markup is W3C valid,
I'm getting the following error when I try to validate it:
Line 14, Column 17: there is no attribute "PROPERTY"
<meta property="og:site_name" content="sitename">
In case it's not valid, will it impact my pagerank and other search engines algo?
Is it possible to cloak those properties?