I'm a little bit worried about the proliferation of text-based formats like this. Currently we have MarkDown, ReStructured Text, Textile, AsciiDoc, Perl's POD, Wikipedia Wiki markup, and now this. When you pick one of these, you gamble that the one you chose won't fade into oblivion, forcing you to convert all your documentation. Some of them have features that others do not, making an informed choice even more difficult.<p>I don't know what the answer is, but it makes me hesitant to use any of them.