I start typing in what I used to build it, then you didn't have "Stripe" yet. OK, no problem. So I click "add a new one" and it takes me to a new page, deleting the stuff I've already entered. Come one, man! New window at the very least.
Edit: Btw, BoxRowSeat looks awesome! You should probably make the tagline - "Sell your stub to your own hub". It rhymes better.
Edit 2: Fixed! The tools link now opens in a window. I'll soon add a way to add new tools in the input box itself.