[sandGorgon]

Mine was a predictive road traffic alert service in India. Wanted to use cell phone data along with congestion prediction to send SMS alerts about traffic jams.

We (me and a couple of guys and profs from academic research bodies) started work on it - I spoke to some of the biggest VCs. I was told by all of them that people in India dont care about traffic - so it is not a problem worth funding.

In retrospective, I should have stuck with it a bit more, but it was not a low-cost startup idea (most of the money would have been spent on Ph.D salaries) and maybe also have co-founders who beleived in the idea more (mine didnt).

But I ended up doing a services startup, which is doing OK - 13 people now!