Have you ever stopped to consider where that status update, photo or video might go after you've put in on Facebook, Twitter or other social networking sites?
On Panorama we took a look at the consequences of sharing too much. You might pay the price later on when applying for jobs or houses in the near future.
Also, we find out how advertising are targeting what they are selling us by working with Facebook to understand what we might want to buy.
Emma Buckley Lennox, Nat Tencic and Esther Ooi report.
