Really old post (I know) but the link is dead and the question is not answered anywhere else. I'm trying to embed html using the insert html function, like this:
<div id="surveyMonkeyInfo"><div><script src="https://www.surveymonkey.com/jsEmbed.aspx?sm=xxxxxxxxxxxxxx"> </script></div>Create your free online surveys with <a href="https://www.surveymonkey.com/">SurveyMonkey</a> , the world's leading questionnaire tool.</div>
This is SurveyMonkey's latest embed functionality. Hopefully Silverstripe can support this.