We’ve already seen way too much of some politicians and celebrities on the internet, but it seems human foolishness knows no bounds where the internet is concerned: sharp eyes have spotted a trend of people posting things like driver’s licenses, debit cards and other items with sensitive personal information in plain view on the internet through services like Twitter and Instagram. The reasons for posting these images aren’t immediately clear – and frankly, there isn’t a single logical explanation that doesn’t make these folks out as complete fools.

What this means for you:

In case you aren’t clear as to why this is a bad, bad thing – posting your sensitive personal information on the internet is tantamount to building a gigantic neon sign over your head that says, “Steal my identity, please!” To all the people who are doing this – STOP. Put down your smartphone (ironic, eh?) and step away from the internet. Go stand in the corner and put on that funny, pointed cap. Congratulations, you’ve just earned the Dunce of the Year!

Parents – if you have a teenager with their own smartphone and they’ve just earned their driver’s license or their own credit card, make sure they aren’t taking a picture of that shiny new card and posting it on the internet to brag to their peers. It might be a good time for a little security chat – and will be a lot more comfortable than that other chat you’ve been putting off for awhile now, right?