I agree. Except AA has been good of late crediting purchases. And BA has a 50% success rate in my book. The best one IMHO is Capital One. Those bonus points post rather quickly (purchase points do as well-no need to wait for the billing cycle to end). I have only had to contact them once, and the points were credited while I was on the line with a CS. The only time I use DL's shopping portal is if they actually have you use a promotion code in order to get bonus points. And I make a screen shot with the bonus code in case they give me flak later on. Not that that will sway them one bit.