If you don't mind something that has neither Won nor Failed yet, here goes:
http://GetLocalNe.ws (my self-funded startup).
Launched about 10 months ago. Have been at it since then (using a goodish number of people I employ), pumping in cash/time/effort etc.
Still working largely on back-end, but it seems to be gaining at least a small (and growing) user base slowly. Started averaging 5k unique visitors/day since the beginning of this year/month.
Will keep at it through 2012. :)