Your mobile interface is good - needs a tiny bit of polish around things like the vote counts being cut off on the "list of lists" view. Your featured lists suck. Greatest presidents? What's the utility, other than "oh look"?

Find a niche and cram yourself in there, saturate it, then look at other verticals. Right now you're putting the onus on the user to find a use for your service. Don't make them think. Give them a use.

Given the extant decent mobile interface, and the general clumsiness/info-overload of the ilk of trip advisor, sculpting for travel lists might be a good niche to push into - best places to eat, stay, see, etc. Cheap to experiment with this and other verticals.

Anyway, that's my $0.02, and fwiw I've steered several startups (from a dev/consult for equity corner) to successful exits - just not my own!