If you are using recent versions of the above browsers (Firefox 4 or, and preferably, Chrome) you should be able to download WebGL and then view and embed web3D content using ourbricks.com beta viewer – thanks to Henrik and team!

This post is my test that the embed function works fine with wordpress.com and if it does then perhaps I can use it with our Stream/Moodle LMS (learning management system).
http://vu.ourbricks.com/556b25706619315efa14d11b274ef67d/processed/embed.html
The link is below, the direct HTML (iframe scr) is above- but does not appear to work for me in wordpress.
http://vu.ourbricks.com/556b25706619315efa14d11b274ef67d/processed/embed.html

update; looks like I need to host my wordpress.com site via the wordpress.org tool (download) and then install an iFrames plugin so 3D models are run inside the browser.