Usability 
Lonely Planet's mobile web site has become my new favorite free online mobile travel guide. The site provides extensive information for hundreds of cities around the world. For each destination listings cover restaurants, hotels, shopping, attractions and night life.
For major cites like Vancouver there are hundreds of listings, each of which includes a brief description, click to call phone number, address, Google map and approximate price range. The site is searchable by keyword and tag and also features Lonely Planet's Top Pick's section where guidebook authors share their favorite destinations, attractions, restaurants and hotels.
Another feature I really like is "What's Around Me" (image) which lists the best nearby restaurants and attractions for any address, city or zip/postal-code. You do have to enter the location at least once. Lonely Planet does remember where you are between visits to the site.I was hoping the site would use Gears to retrieve my location on my HTC Ion Android phone but it doesn't.