I have several friends and colleagues who are reluctant to fully embrace the power of social platforms like Twitter because they are concerned about their personal privacy, and understandably so: User-provided status updates have the ability to reveal more than you might intend to the general public. A quick example: Search Twitter for an airport code, for instance, LGA and you can learn an awful lot about where people live. Pair that with a tweet about buying a 50" plasma TV, and you expose yourself considerably: It would take someone five minutes to a) find out you have something expensive in your house, b) find out you are out of town, c) find your zip code from Localtweeps, and d) find your address in the local Yellow Pages.
How can one avoid this risk? After much consideration it turns out there is only one thing you can do, and that is to drop out of society. Seriously. Because although you can control what you say on Twitter (I never tweet about travelling), and whether you join Twitter at all, you cannot control what your friends say on Twitter, and with millions of users in the U.S. alone, chances are your friends are on Twitter.
So say one of your friends uses Tweetie on her GPS-enabled iPhone and tweets that she is at your house watching the baseball game on your new big screen TV. And shares a Twitpic of the big screen meticulously placed between two really nice pieces of art. Assuming your friend is on Twitter's public timline, anyone can now pinpoint the location of the big screen and the art. And that's all the motivation and information some people need to take undesireable action.
Paranoid? In my opinion, no. To me it's a real threat of which people need to be aware. (Especially Millennials who have grown up sharing everything online - their thoughts, their location, their photos, etc.) Until we see how social platforms will be used against people we should all apply some level of self-defined filtering to make sure we (and our families) are protected.