5. The method of claim 1 , wherein the first product is purchased from a seller, and wherein the method further comprises collecting a referral fee from the seller in connection with the purchase.
5. The method of claim 1 , wherein the first product is purchased from a seller, and wherein the method further comprises collecting a referral fee from the seller in connection with the purchase. 6. The method of claim 5 , further comprising retrieving, from a document server, a digital document matching the text captured by the capture device, wherein retrieving the digital document comprises: identifying the document from which the text was captured; identifying a source of the identified document; and initiating payment to the identified source of a portion of the referral fee.