Recently i have put the "Like" button of FB on my website's index page.
Nothing fancy here, a typical FBML "Like" button
<fb:like href="www.example.com" layout="button_count" show_faces="false"></fb:like>
Less tha 48 hours later i noticed a 1 point drop in Google Ranks.
My question is: are these two related or it was just a coincidence?