[SV650rules]

I use Facebook to look on some historical and special interest sites, never use it for chit-chat drivel that most users post ( mostly self promotion ). Never give Facebook any more than basic info, just fictitious name, wrong date of birth...

They obviously access your email contacts etc because they match them up with their database and suggest them as friends, they have also accessed other peoples contacts as well and they cross match and also suggest them as friend. Farcebook is the nosiest most prying program ever invented ( except maybe windows10 ).