That's what I thought, but I wasn't sure. Just thinking about the idea of how to differentiate that is becoming a massive headache. But if we split three ways evenly, we might run into the "you're not doing enough work (compared to how much you own)" problem, which is the biggest one for me. I don't want the two to be resentful at me, and I don't want the other developer to resent that the nontechnical one is getting an equal share. Somehow when it was only me and the nontechnical one this was never a problem and it was an obvious 50-50 split, but not so obvious anymore.
The nontechnical founder is really insistent on selling should this site become successful enough. I don't think any of us would oppose that, but I just don't want to run into the above problem.
Thanks!