Just as I had been discussing information security here on devRant, Facebook reminded me of an article I posted a year ago.

http://makeuseof.com/tag/...

Makes me wonder if Facebook's iOS app is keylogging me. Not long ago I was having a conversation at work with a coworker on a topic of a product I know for certain I had never, ever searched for online. Just after we ended the conversation, I launched my Twitter app and, lo and behold, there was an ad for that exact product on my feed.