In advance of Facebook’s possible location announcement tomorrow, Foursquare is tweaking its privacy settings today. In an announcement made on the company’s blog, Foursquare says that its service will now allow you to change your settings to withhold or share more information with your Foursquare friends. For example, Foursquare is now allowing users to choose to share your email or phone number with friends or choose to opt out of all Mayorships

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Ahead Of Facebook Location, Foursquare Talks Privacy 101