I created an ad for the Open Source Advertisement question and clicked submit only to see:
That's funny... I used the image upload button on the toolbar. Here is a verbatim copy of my post:
[![An open-source JavaScript IDE][1]][2] [1]: https://i.sstatic.net/sYjvh.png [2]: https://launchpad.net/jsstudio
The real problem is that on the question itself, it states:
"Can be hosted anywhere (tinypic, twitpic, your blog); we will mirror the image locally when we serve it."