[jeremycherfas] I ran a moderately complex status site with it 15 years ago. Then I found I wasn’t making full use of all that extra functionality you’re talking about. I’m not sure it is an indieweb question. If you run Tinderbox locally, you are independent. And if you are building a site with it, adding mf2 markup would be trivial. There are other people here who use mind mapping tools and similar who can probably offer better advice.