Linking Facebook and Twitter to Foursquare
Linking user accounts
To link your Foursquare account to Facebook and Twitter, make sure you are using Foursquare as your user account. Then hover your mouse over your name in the top-right corner of any page on foursquare.com and click on “Settings" from the drop-down menu. Under “Sharing with other networks” click on “Add Facebook” to authenticate your Facebook account with Foursquare:
Linking Foursquare pages/listings with Facebook pages
Now that your Facebook account is linked to your Foursquare user account, you’ll be able to link together your Foursquare listing with a Facebook page which you also manage. Hover over your user icon in the top right, and then click on Switch Accounts to start using Foursquare as your Page instead of your user account. Click on "Manage your locations". You should see a blue box where you can connect to Twitter, Facebook, and your website!
Thanks for your feedback!