Uber has been having a tough time getting a foothold in New York City, and it's temporarily withdrawing the UberTaxi service it had in beta. The withdrawal isn't entirely for the reasons you'd expect, however. While Uber claims to have been getting grief from the city's Taxi and Limousine Commission for offering a competing (if technically legal) service through its smartphone apps, the program's end was due to demand rather than any kind of outright ban -- the Commission's pressure reportedly kept Uber from matching interest with enough yellow cabs. Black car service is still on