> With a typeface, it's just this black box as to who is using some of the stuff, then you have no way of reaching back. You're completely reliant on whoever makes use of it tells you about it, which probably no one does, right?<p>I've seen multiple websites (What The Font being one of them) which analyses a picture with text. They then try to guess the font being used. If you could automate this process, you might be able to scrape content and figure out who's using your typeface. I guess that is mostly interesting for a commercial typeface looking for software piracy, though.