Frequent contributor Bennett Haselton writes with some strong cautions on a Facebook "feature" that lets you search for random phone numbers and find the accounts of users who have registered that number on their
Facebook profile. This has privacy implications that are more serious
than searching by email address. Especially in light of the expanding emphasis that Facebook is putting both on search qua search and on serving as a VoIP intermediary (not to mention the stream of robocalls that the FCC is unable to stop), this might make you think twice about where your phone number ends up. Read on for Bennett's description of the problem and some possible solutions.