Zagat.com for restaurant reviews.
CitySearch.com for finding a movie, entertainment, or even a barbershop.
Vindigo.com for accessing and downloading city guides to a PDA.
Menupages.com for sneaking a peek at restaurant menu pages and prices in Boston, Chicago, San Francisco, Philadelphia and New York City.
OpenTable.com for making restaurant reservations online.
BookALimo.com for comfortable, hassle-free transport.
TripAdvisor.com for recommendations from travelers.