Are you looking to turn this into a viable business? It's great you're featured in LifeHacker but I don't see how this app can provide thicker value, alone as it is.. I think just attaining more users won't help you find a business model, so you should perhaps broaden the scope... as it is, it sounds like a cool feature. So my contrarian advice is to focus on making this of thicker value, rather than just leave it alone as it is