Tyler Mears is convinced Facebook is spying on her after two adverts popped up for random products she'd just been chatting about.
The journalist had been talking about some very unusual things - and the next day adverts appeared on her timeline. Facebook CEO Mark Zuckerberg has denied the social network uses your phone's microphone to listen to your conversations and target you with ads, but despite this the urban myth persists.
But how did this happen? Is what they say - that Facebook is listening in on us 24/7 - true - or is there a less sinister explanation?
Tyler, who works for Wales Online , tells her story here - For years now, there's been an "urban myth" that Facebook is using your phone's microphone to listen to your conversations
Read more on mirror.co.uk