I use FB on my Iphone a lot. I do not have the FB app on my Iphone. I have a shortcut to the website. I have an Iphone 5C and ios 8. I notice lately that I will talk about something very specific, for instance, foot massage, romantic issue... and a suggested post for something very similar will soon appear in my FB feed. Each time I search my memory to recall if I have posted, emailed, texted or used the mic to discuss those issues, and each time I did not. These suggested posts reflecting my conversations have occurred often enough now that it seems very unlikely it could be a coincidence. Does anyone know how this happens and how I can prevent it?