Google announced that it recorded 1 trillion URLs in its index two and a half years ago. In face of so many websites, how do you make sure that you don't miss the most important, most interesting or most promising ones? Mashable, a social media news blog covering cool new websites and social networks, compiles a list of the Top 10 Websites to Watch in 2011 for your reference. Either you want to trade or get new ideas; either you want to buy cheap luxury goods or eat in good restaurants; either you want to make friends or book flights, these 10 website will give you excellent services which will definitely beyond your expectations.

   Foursquare - LBS service provider

Launched in March 2009 in America, users of Foursquare have broken through 3 million. Actually Foursquare is not unfamiliar to Chinese netizens because Chinese media has reported massively on it. Now, the developmental curve of Foursquare is faster than Twitter.

Foursquare is a LBS - location-based social networking website, software for mobile devices. We expect Foursquare can enlarge its services into a higher level in 2011. It is also not a surprise if it starts to acquire smaller companies because it has potential.