The launch of Facebook Places in the U.S. on Thursday turned heads in Canada. Facebook users who are happy to post pictures and declare what they are doing will now be able to use their mobile phone to “check-in” at their favourite bar, park, shop, or any place they like.

Fans of these location-based social-networking tools love the fact that they can tell their friends where they are at any given moment.

Of course, there are privacy concerns.

“We haven’t had an opportunity to fully examine the new tool. However, this is something we are monitoring very closely,” Anne-Marie Hayden, spokesperson for the Office of the Privacy Commissioner of Canada, said.

Facebook said that it will eventually let restaurants or shops claim their locations, which could open up possibilities for targeted ads, deals or coupons for loyal customers.