Edit: Most recent code will be updated to this post. Credits to @bucaneer for refining the first bookmarklet to only select a link from the first post with titled"Permalink"
To preview BoingBoing posts inline with a bbs topic, create a new bookmark in your bookmark toolbar, and add the following code to the location field where you normally put a link. Go to a BoingBoing comment thread and click on the bookmark you just made. All this does is finds the first link in a thread and opens it up in an iframe inline with the page.
So it should look a bit like this in action:
@noahdjango also requested a way to preview boing-boing posts before clicking on topics. This should only trigger a preview if a link is a boingboing link and you haven’t read it yet. Also, only apply the bookmarklet once on a full page load.
It might be a little sluggish since it’s doing 2 page loads (iframe to the thread, then a redirect to the main page). If you want to dismiss the preview, click anywhere else on the page or hover on a new boingboing link that is unread.