You want restaurant info, and you typically go to Google for at least the 411.
Google, which owns Zagat, has released lists of the most-searched restaurants by city.
For Philly, the top 10 is:
Vetri
Le Bec Fin
Tinto
Supper
Fountain
Amada
City Tavern
Oyster House
La Viola
The Capital Grille
The list of lists is here.