Do you sometimes wonder if apps on your phone are listening to your conversations? Maybe you discussed a vacation with your best friend and suddenly the ads in your social media feeds were for paradise beach-front hotels, even though you never did a web search?

Marketplace reporter Jack Stewart is investigating this and needs your help. Share your stories of the times you felt like your phone was listening to you, what ads you saw and whether you found it useful or creepy.

Send your comments below, and Stewart or one of our producers might be in touch.