No images here either, just broken frames.

Looking at the source gives me an img src="webkit-fake-url://5212E7C3-2AB0-4C87-BA79-7CFA7AA54052/image.tiff" alt="" image tag, which is pointing to nowhere. Have you uploaded the images somewhere? If so, you should be able to edit the links.

Edit - please disregard this post

I can't even see the blue question marks. I looked in the editor and saw no sign of images. If you point me to the locations of those images I can try adding them and see if it works any better when I do it.

I see the same thing as you.

When I view the page source (always a good first step in debugging why images won't show on a page), I see tags like

<img src="webkit-fake-url://5212E7C3-2AB0-4C87-BA79-7CFA7AA54052/image.tiff" alt="">

... these are almost certainly not what you wanted. (And tiffs won't render in almost anyone's browser.) It appears the WYSIWYG editor is not doing what you wanted.

In this post, Lukeprog hosted the image on his own site and then included it in the post with this code fragment:

<a href="http://commonsenseatheism.com/wp-content/uploads/2011/04/metaethics-flowchart-smaller.png"><img src="http://commonsenseatheism.com/wp-content/uploads/2011/04/metaethics-flowchart-smallest.png" alt=""></a>

Suggestion: if you don't have your own hosting to use, put the image on tinypic.com or somewhere similar (an image host that's okay with hotlinking), and transclude it from there. I'm not sure how to do this in the LessWrong editor, you may have to edit the HTML.