At the Facebook HQ in Palo Alto, CA, Facebook CEO and Founder Mark Zuckerberg, along with other developers, engineers and partners at Facebook announced a new location based product called Facebook Places. This is essentially a check-in service like Foursquare and Gowalla that allows you to check-in to places that you have been to share it with all your Facebook friends and family. You will be able to see which of your friends are currently at the same venue and which of them have been there. There is also going to be an option which will allow you to tag your friends into places you check-in. Of course you can change all that in your privacy settings and by default only those who are friends with you on Facebook will be able to see your check-ins. Facebook is also going to keep a complete history of check-ins that you have made at a dedicated page on web.
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