Ask HN: Continue or Cut My Losses

I have been developing ommageo.com for a little over a year, with little to no traction. The beta is live at (ommageo.com) and with the help of a handful of HN posts/users and feedback from a few beta testers I have redesigned the web version here: http://solitaireinfosys.com/demo/will_brown_new/index.php

Now I am at the verge of creating a mobile version based on the redesigned web version, but I found myself asking should I just stop now? Not that I am quitting or giving up, but facing the reality that I may be building something people do not want: a location based video sharing app.