Google trends visibility

You can't see Google trends graphs on web pages if you are not logged in to your Google account. That means that his example code from Google trend may be invisible for users.

 
<script 
    type="text/javascript" 
    src="//www.google.com/trends/embed.js?hl=en-US&q=Chef+automation,+puppet+automation&date=1/2011+28m&cmpt=q&
       content=1&cid=TIMESERIES_GRAPH_0&export=5&w=500&h=330">
</script>

Example screenshots showing the the page when the graph is and isn't visible.

References

1. http://rtomaszewski.blogspot.co.uk/2013/05/popularity-of-automation-and.html