I was successful in embedding "copying" the html code from google calendar into my page. But cannot get the iframe code to work from a different website / source. What make google's iframe code work and someone else's not. Note: that when I copy the other website's iframe code onto the page and then click on the update button; the result is that wordpress just sees it as text. But doing the same with google's iframe code, wordpress converts it (and of course it works). I am confused.
The blog I need help with is roseneathvacationrentals.wordpress.com.