You need a little animated video. Or at least pictures of what it does. Although I read the FAQ and all the pages on your blog, I'm having difficulty understanding if this is an add-on to a mapping application, or something like that Color app that was famous for 15 minutes a few weeks ago, or...well, I'm just confused about exactly what it does, and not curious enough to spend time trying to figure it out. I'm guessing PG and others at YC didn't reject you as such, they just weren't able to work out what it's for.<p>I hope that doesn't come off as harsh. It's a common problem on landing pages, in FAQs, and in documentation; people forget to begin with short, clear statements that answer the questions: what is this for? why does that matter? How do I do something cool with it?<p>I remember spending most of an afternoon many years ago trying to wrap my head around TeX, and eventually losing interest because Microsoft Word's equation editor seemed an awful lot easier for anyone short of a typesetting professional. The documentation seemed to say 'go away and leave me alone.'