The American Express Blue Business Plus card is now offering 15,000 points when you refer using this card, up to a maximum of 55,000 points per calendar year. 15,000 points is the most that any American Express card offers (equal with the personal & business platinum) this is significant for people wanting to self refer to other cards. We discuss this in more detail here. Please do not share your referrals for this card in the comments below. The 15,000 bonus is not competitive, they often offer 20,000 points and referring yourself would make more sense.
