i am using Yoast WordPress SEO plugin v1.2.7 for my website http://www.couponsriver.in
In each and every page source i am finding Two Titles and Two Descriptions. One is normal title and meta description and another one is meta property='og:title' and meta property='og:description'.
Now my question is..what is this 'og:title' and 'og:description'...why it is displaying twice. is it necessary...? or else let me know how to remove or resolve this issue..
I would appreciate your help in this regard.