Glad that you and the other posters have not had any problems with them.
To respond to the jab at me there: in my case it wasn't just 'listening to too many stories'. The scammers actually contacted me when I was selling something there a year or two ago. Later, when I talked to my friends about it, they confirmed that they have had similar things happen to them too.
So no need to make light of others' bad experiences, yeah? It's not my intention to make the site look bad, because it's still a very useful tool. However I, personally, am averse to using it to sell items because of the above reason.
One of the methods they used I have mentioned in a previous post. I was selling an old handheld console, and the scammer Whatsapped me with a fake Maybank successful transaction screen. Sent me the address for me to post the item.
The other, which I have gotten through the mudah chat system is some person contacting me from an African country. It looked fishy so I never even responded to it.
EDIT: Another user here mentioned being contacted from Nigeria when selling expensive items. That sounds similar to the second method, but the item I was selling at the time was under RM500.
Now that you mentioned it...you're right as well. There WERE a few fellas who contacted me, but these were a few years ago when I was selling my furniture as I was shifting to another place. Some joker asked me to send my sofa to the US as he was buying for his son in college...in the US! I said that it would be much cheaper for him to just buy a sofa there! And some were yup, like you said from Nigeria too. But thankfully I don't get these anymore these days.
The person who was listening to too many stories,...well, I was referring to my friend instead. No hard feelings ya!