Comment Re:blessing in disguise? (Score 1) 178
In order to reverse this modification, it means that Facebook has retained a copy of your original contact list. Most likely FB has numerous timestamped versions of their users contact lists. For most professionals it is standing operating procedure to take backups before doing any modifications. However while that tidbit is probably not surprising to slashdotters, it may come as a surprise to the average Facebooker how much information FB is collecting over time.