If you think about it a little (but not too much), you will realize that there are essentially two ways to post an image on the LuLa Forum, and one is more stable than the other.
Method 1: Provide a link to an image that occurs on some other website (such as Flicker, etc.)
Method 2: Click on Attachments and other options and choose an image on your own computer to upload to the forum.
All of the "ugly links" problems result from the use of Method 1, because if someone either removes the image from its 2009 location or replaces it with an ad or fails to keep the URL, then the image cannot be seen thereafter on LuLa (or anywhere else it is linked to.
Hence, Method 2 is the only reliable way to ensure that your image will still be visible in eight year's time. If you use method 2 and wish to remove a post, you can always delete it (as long as you are still a LuLa member.)
A broken link to an image is NOT LuLa's fault.