How I Use AI to Write Facebook Marketplace Ads
One thing members keep asking me is: "Klaus, how do you actually use AI in your day-to-day business?" Here's a real example from this week. I had 3 boxes of mixed electrical equipment — industrial plugs, fuses, cable fittings, lighting — stuff I picked up from a lot. Before AI, writing ads for Facebook Marketplace for each of those would take me 10-15 minutes per item. Looking up the right product names, writing Danish copy, figuring out a fair price range. It adds up fast when you're running 80,000+ listings on ebay too. Here's what my workflow looks like now: 1. I photograph each lot and drop the images into a dedicated OneDrive folder. One subfolder per item. 2. I open Perplexity Computer and say: "Go to my OneDrive folder, find the DBA and Facebook subfolder, and write a title, ad copy, and price suggestion for each lot — end every ad with my standard pickup address and PostNord shipping line." I leave the Perplexity Computer to do the task, and I do other stuff while it works. 3. The AI looks at the images, identifies the products (brand names, specs, quantities), writes the Danish ad copy, and suggests realistic price ranges based on what's in the photos. 4. I review, copy-paste, done. What came out this week: - A mixed electrical lot (OSRAM, Philips, OBO, Thorsman) → fully written ad in Danish, price suggestion 200–300 kr. - ~20 red CEE industrial plugs (400V, 3-phase) → identified correctly from photos, priced 250–400 kr. - Diazed 63A fuses + WAGO connectors → spotted the brand names on the packaging and wrote a technically accurate ad. The AI doesn't just write generic fluff. It reads the images closely enough to name the specific products, mention quantities, and flag that items are used vs. new-old-stock. That's the part that used to eat my time. /Klaus KLJ Trading