In what ways have you been reminded of how much our online activity is tracked and monitored?

I know this is going to come as a surprise, but Earthbound_Misfit is not my real name. I have a Facebook page that incorporates my earlier Fluther moniker so I can keep in touch with all my lovely Fluther friends outside of Fluther.

FB just suggested a new friend who happens to be someone I interviewed in my real life. She isn’t in Australia and we have no shared contacts. I think I do follow her on LinkedIn under my real name. It seems clear to me some algorithm has connected my activities online and come up with that suggestion.
Makes me feel a bit icky.

Have you had any reminders about how much our activity online is tracked and monitored? Perhaps you checked out a subscription for Trainspotters Monthly and were then fed an advert for a Trainspotting weekend in the Yorkshire Dales. You can be serious or funny in your responses. Bought undies at Marks and Spencers and Facebook fed you a Depends ad?