Comment on Technical Support by SEO Dave.

WordPress Technical Support When a website visitor shares your WordPress posts on Google+, Facebook etc… what you’ve added to the Title, Description and Image is what Google+, Facebook etc… will add to Google+, Facebook etc… rather than guess what the title, description and image should be.

Means you can specify exactly what those social networks should use.

If you don’t care what Facebook etc… uses when your posts are shared leave the options blank: IME they aren’t a big deal, for example there’s no direct SEO value having your posts shared on social networks, it’s not where I spend my valuable time.