ThatsBoBo - 12:13 am on Feb 14, 2012 (gmt 0)
When you create a "like" button on facebook for a site or page, you can now also add Open Graph Meta Tags to your page/site which actually links your page/site to facebook.
You no longer have to create a Facebook page for your site, your website becomes a page that people "like" and that like gets added to their interests just as if they "liked" a facebook page for a company.
I feel this gives the webmaster more control. Instead of creating a Facebook page for your site or company, your site or company page becomes linked to the Facebook platform and will show up in Facebook search, etc.
You may want to look into it if you don't want to actually create a Facebook page for your site/s, but still want to benefit from social networks.