The Listia the above refers to is not the one I know. Sure, there are scum puddle sellers who don't ship and list fake listings. Listia doesn't know that until someone files a complaint.
On the whole, I have had many, many good experiences. I've gotten authentic Coach bags, tablets, jewelry, gift cards, etc.
If you see a listing that sounds too good to be true, red flag it. There are shipping guidelines. If a seller gets a little greedy, pass them by.
The only problem I had with Listia is them selling/auctioning off their own goods. In doing so, they raised the price of credits exponentially. It used to be 100 credits = $1.00 Today, to get a $25.00 gift card to Amazon, it will cost you anywhere from 350,000 credits to 450,000. Supply and demand.
When I first joined, I could get a $10. Amazon gift card/code for about 7,000 credits. Ha. Those days are long gone. You can find some really great stuff and some garbage.
Caveat Emptor. It's a fun site, with many wonderful people, and some not so wonderful. Sounds like life to me.
Bottom Line: Yes, I would recommend this to a friend