It is from a script in his page: http://i.po.st/share/script/post-widget.js http://i.po.st/share/script/post-widget.js I've also never seen that on another bl

It is from a script in his page: http://i.po.st/share/script/post-widget.js http://i.po.st/share/script/post-widget.js I've also never seen that on another blogspot blog, so while they might've added more stuff, i don't think it's that.