[Plugin: TGN Embed everything] tgn embed everything, a strange experience!

iframe is supposed to embed a webpage! I does not! Instead, every time I wrote “iframe” in a page, a review would bring a gaming web page! adding a url, no matter in what form, would still show a gaming site. I wonder what is the trick! Anyone can share an idea here?

http://wordpress.org/extend/plugins/tgn-embed-everything/