Contact book presence is but one input into that algorithm, which also incorporates friends of friends, friends of people who've logged in from the same IP, people who frequently interact with the same people/content. Its not directly "You might know Alice, we know because she has your number"
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In that sense, isn't Facebook showing people you may know, also disclosing to people that they are in my contact list?
Contact book presence is but one input into that algorithm, which also incorporates friends of friends, friends of people who've logged in from the same IP, people who frequently interact with the same people/content. Its not directly "You might know Alice, we know because she has your number"