They write on their site "If you sign in to QuickBitcoin with a bitcoin wallet address then all your earnings will accumulate in your QuickBitcoin account and the total balance will be paid to your bitcoin wallet on Thursday of each week (providing the balance at that time is at least 5500 satoshi)."

My experience with them is to short to conclude that they are not paying. On Thursday was my balance under 5500 i think.   We will see.