If you're a Facebook user, you've probably seen this meme circulating, somewhat virally, among the various status files of people you know:
WARNING!!!!! Go in to your PRIVACY settings and click block list, type in AUTOMATIC BLOCK, there's 3 names there DELETE them they're apparantly taking pictures of our kids off our fb and there meant to be peadophiles, They were on mine and prob on yours too. 3 FOREIGN NAMES block them 1 at a time. PUT THIS ON YOUR STATUS TELL YOUR FAMILY AND FRIENDS
Now, aside from the general idea that anything that tells you to display it publicly and tell all your family and friends is almost assuredly bollocks, I'd like to look at the general claim that it makes: That there are perverts on Facebook looking for pictures of your kids.
There are really two parts to the claim. The easier part is that there are people you don't know looking for pictures of your kids. That's probably true, but only in the general sense. There are over 350 million Facebook users (according to Facebook itself). The odds of any one random user specifically targetting YOU for pictures of YOUR kids is vanishingly small. Generally, people may stumble across pictures of your kids (and I'll deal with that in a minute), but the specific risk to you or your children is very, very, very, very small.
So the bigger question is how many perverts there are on Facebook. Given that the population of Facebook is 14% greater than the population of the entire United States of America, it's fair to say that the number of pedophiles on Facebook is likely to be about 14% greater than the entire number of pedophiles in the United States of America. Statistically speaking, pedophilia has a background level where not specifically encouraged by culture (like ancient Greece), so that's a reasoned guess. Unfortunately, there are not good statistics on what that level is. So let's give it the benefit of the doubt and say that 1 person in 10000 is a pedophile. Pedophiles are overwhelmingly men, but there are women and we've seen a few get arrested in the news lately (usually female teachers boffing male students), so let's put the gender split at 95% men.
What does that mean? With about 175 million women on Facebook, and using these estimated numbers, we can expect that there are 875 female pedophiles on Facebook right now, and over 16000 male pedophiles on Facebook right now. Sounds scary doesn't it?
But... like any population, there are other "undesirables" too. For example, this site suggests that in the USA there are 25-50 active serial killers in the USA at any given time. ACTIVE... that's not counting the ones whose crimes haven't been noticed/collated into being called a serial killer, and the ones who haven't quite flipped out yet. It's very likely, therefore, that Facebook's similar sized population harbours 25-50 active serial killers at any given time, plus serial-killers-to-be!
So really, does the existence of these people on Facebook matter to you, the friendly Facebook user? Personally, I don't worry about them. You're no more likely to be targetted on Facebook by some pervert or nutjob than you are likely to be targetted by someone picking your name out of a huge phone book. It's possible, sure, but very unlikely. And best of all, Facebook gives you some options to help reduce the likelihood of these people targetting you.
First and foremost, don't accept every friend request you get. If you don't know the person, don't friend them. If some random person walks up to your house and bangs on the door, you don't let them in to poke around your stuff do you? Why would you friend someone you have no clue about? Seriously, this simple, best way to increase your Facebook security actually requires that you NOT do something. It's so easy to ignore friend requests from people you don't know.
Second... pictures. I've talked about keeping your stuff visible to your friends only, and I'll reiterate it here. Hit the photos tab and click "Album privacy", then set your photos to "Friends only". You'll not only immediately prevent any pervert, non-friends from seeing your stuff, you'll also block people from your work from seeing your drunken, bra-on-head photos from last Friday's piss-up too (even though you should never post crap like that on the internet because The Internet Never Forgets... Ever).
Third, once you've set all your photos to "friends only" or something more appropriate, visit the Settings link and select Privacy. Go through all the little bits of information and make sure you have them set the way you really want them... Do you really want your Contact Information, for example, visible to everyone? how about friends of friends? friends only? Go through these settings and make sure they reflect your desires.
If you do this, you aren't going to have to worry about random weirdos trolling through your stuff, nor will you have to worry about Google picking up your info and blasting it to the world. And more importantly, it's a lot easier than trying to find out who the current list of pedophiles contains and manually adding them to your blocked list every day.
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