Running this:
<html>
<head></head>
<body>
<iframe width="500" height="500" src="http://exame.abril.com.br/tecnologia/facebook/noticias/facebook-nao-tem-planos-de-voltar-a-china-diz-executivo">
</iframe>
</body>
</html>
In Chrome yields:
Refused to display document because display forbidden by X-Frame-Options.
Which is explained here.
solved Iframe source doesn’t work [closed]