I saw many websites dedicated to promote bank bonuses for opening a checking/saving account, however, I could not find out how these banks operate affiliate problems. Besides, these websites usually link to the banks via "clean" urls, but I'm sure they somehow get rewarded by the banks. I'm aware that banks usually offer bonus for referral of friends, however, it is usually via printed coupons/forms/links sent to your account, not the same way as afffiliates work. Help/answers appreciated!