It’s awesome that Bridgy Publish now has basic support for POSSEing to GitHub (https://github.com/snarfed/bridgy/issues/333) and I’ve had pretty good luck with it http://tantek.com/t4t11 and http://tantek.com/t4t31.
However I noticed that images and hyperlinks (e.g. in http://tantek.com/t4t11) did not make it to the GitHub copy https://github.com/snarfed/bridgy/issues/333#issuecomment-366872578
It would be great if Bridgy Publish could support img and a href tags and convert them accordingly for GitHub!