Fodor's Travel Online
Destination guides, Fodor's famous hotel and restaurant review, and an abundance of articles. 

Concierge
Features Conde Nast Traveler resources, destination information and recommnedations.

Travelocity
Airline tickets, hotel rooms, car rental, daily specials and  recommendations.

Lonely Planet
Travel reports, maps, pictures and bulletin boards and more.

MSN Expedia
Expansive directory of travel services includes trip-planning assistance and travel news as well as air, car and hotel bookings.