Since its copyright blunder last month, Instagram has been besieged by rivals claiming to give users better control and privacy.
One such rival is EyeEm, a free app that, like Instagram, offers photo filters and lets you follow favourite photographers and look at popular shots from around the world.
It even offers a simplified sign-up process through Facebook, which owns Instagram. Therein lies the problem. When you set up your EyeEm account through Facebook, it automatically shares not only the photos you take, but the photos you view.
Let me repeat that. It lets other people see what photos you have been viewing.
Not all of the photos on EyeEm are work-appropriate. If you want to view those, it's your business – unless you signed up through Facebook and haven't changed the standard privacy settings, in which case it could be many people's business.
There are people who have had what they thought was their private viewing exposed to their friends, spouses and children on Facebook through EyeEm.
When you sign up, you get a pop-up message that reads in part, "You can now share your EyeEm activity on your Facebook timeline. Give it a try!" You have a choice of "No, thanks!" or "Enable." Please, let's avoid oversharing, unintentional or otherwise.