For many years, I'd successfully sold off surplus or no longer wanted tools, electronics, cell phones, sporting good, etc. on Craigslist. I'd write some descriptive copy with a little marketing pizazz, take some good quality close up photos, price it on the low side and list away.
The really good stuff often sold in hours, most everything was gone in a few days. I'd also get load of spam and scam replies but I got pretty good at filtering them out and not responding.
Since last year though, stuff just sits there and sits there. Weeks and weeks go by with no responses- not even spam. I renew the listing over and over. It's like no one is reading the for sale ads any more.
Only thing I can figure is the website's viewership has fallen way off- maybe as a result of them killing the personal ads section due fear of litigation.