If you try to sell something you have previously stolen, the merchant sais he doesn't accept fenced goods. Is there anyone who accepts stolen goods? Ithought that the black market thieves might accept it, since they sell stolen goods, but they didn't.

Every fence:
Shadow Thief Guildhall
Foger The Fence
.
.
.

There's also a merchant that appears at night in Waukeens Promenade that accepts fenced goods. He's quite hard to find but is over to the east outside one of the entrances to the Promenade.

I think his name is Vincent. Not sure, however.

Try Jayce Kat. His name is Jayce.

It's ROGER the fence in the sewer (TEMPLE DISTRICT).

There is also a fence up the stairs above Gaelen Bayle's house in the SLUMS.

Rather strangely I don't think that the fence upstairs in Gaelen's house accepts fenced goods which is VERY strange/stupid considering he's a thief himself.

That is correct, Arledrian will not buy fenced goods.

It's Jayes, peoples ;)

Not 100% sure, but I believe a man named Cutpurse, who can be found in the SW part of the Bridge District in the afternoon/evening, also buys stolen loot.

<font color="gold">There's also the female merchant in the Shadow Thieves Guildhouse. She accepts stolen goods, IIRC. ;) </font>

And, of course, Gorch, the #1 guy to abuse for this very reason.