In a move to make its mobile dominance even stronger, Facebook has bought over Italian startup Glancee. The Highlight competitor and ambient location app was acquired by Facebook for an undisclosed amount.

This is the social network’s second big acquisition in the year. It had also bought Tagtile, a San Francisco startup that helps merchants court shoppers with rewards for checking in with smartphones during visits.

Facebook has been building its mobile services and capabilities as lifestyles increasingly revolved around smartphones and tablet computers. More than 10 million Instagram applications tuned to Apple or Android-powered gadgets have been downloaded since the acquisition by Facebook.

Facebook said in a statement “We are thrilled to confirm that Facebook has acquired Glancee. The acquisition closed today. We can’t wait for co-founders Andrea, Alberto and Gabriel to join the Facebook team to work on products that help people discover new places and share them with friends.”

A notice on Glancee's Web site today reads:

Glancee, the iOS and Android application, which allowed users to find new friends based on their current locations, can no longer be found on either the Android Market or Apple's App Store.

A glance @ Glancee:

Glancee is one of the hot passive location startups at SXSW this year, along with Highlight and Sonar. It lets users explore profiles of people nearby and receive notifications of people who have common friends or mutual interests.

Glancee discovers what friends or interests you both have in common. You could then add the to-be-pal as a "Favorite" user – which sounds kind of like friendly stalking, but not really – or strike up an online chat to determine whether you could eventually seal the friendship deal in real life.

Behind the scenes, Glancee uses Facebook to find common friends and Wikipedia to match users based on interests relevant to one another. Say you like Apple: Glancee will match you with people interested in Steve Jobs, Twitter, Slashdot, Silicon Valley, and more.