One of Expedia's best-loved site siblings is TripAdvisor.com. I can't make a trip five feet or five continents away without checking out the latest feedback and photos on TripAdvisor.  While certainly a must for leisure travelers, TripAdvisor now shares the love with business travelers and has launched its Business Travel Center.

Found on their homepage under Quick Links, the section provides a full-service business trip planning resource covering more than 20,000 hotels in more than 750 cities worldwide. Especially helpful is a one stop shop for business trip planning that features a Business Popularity Index that ranks hotels specifically for business travelers. I especially like the interactive maps that identify meeting locations then provide access to the area's venues and identities by helping business travelers find nearby restaurants, attractions, transportation and business services. 

It's a great offering by TripAdvisor, one that will draw business travelers to like it, like an airline offering free mileage.