Just wanted to chime in and say Indie Shuffle is one of the best resources I've found for new music out there (for my taste).

While I have no need for SubmitHub's main purpose, the Popular tab looks like it can serve as another source of fresh stuff.

All in all, massive respect for your work promoting new music. As a sidenote, I'd happily donate some money through Patreon/whatever to support an ad-free version of the site (I know, I know, one in a million :).