I suppose there are spoilers in this. But not really, since they're just mentions of words you won't understand until you read the books.
Mr. Broken wrote:I have felt the burning rain of wounded Moon Spawn
Tasted dust and tears on the Chain of Dogs
Stood the wall at Capustan
I have witnessed
Eaten something that died in a canal in Lether
Felt the flames of Y'ghatan
Worn armor made of golden coin
Stolen fortune's to repay debts in the city of blue light