Some time ago I updated to a faster markdown system for all of my projects. It looks like it wasn't playing nice with web forms inserting \r\n for all new lines. That mean't double new lines wasn't being recognized as a new paragraph.
Formatting should be better now.
This is the markdown processor being used, plus a few modification: https://github.com/developit/snarkdown
I am open to extending it further so if there are any features you want let me know.