...snip...I would suggest, if you are inserting a BGG image, to use the BGGIMG button in the formatting section and enter the image ID# in the popup window....snip...
Thank you! I see part of my problem is that, for Geeklist comments at least, the BGGIMG button insertion doesn't show up in the "preview" view, so I assumed it was broken. All you get with "preview" is [**ImageID=1234**] and not the image itself. But once the comment is submitted/posted, the image shows up.