After some testing, it looks like the WYSIWYG posting tool isn't compatible with the current runtime build (which is still based on VW 7.2.1). I've been meaning to get Bf moved to VW 7.3, and this provides a reason to do so - in the meantime, the post tool update for the current build has been kicked back to the stable (non WYSIWYG) version.
I'm posting this from a new 7.3 build I've put together. It's been put up for download as well - go to the download page, and scroll down to the development links. If you already have BottomFeeder installed, just grab the baseapp zip file (appropriate to your platform) and replace your image/exe with the one in that archive. Otherwise, grab the installation files.
Once you get it installed, you'll have the latest code - including the new post tool - which I'm using to create this post. Enjoy