A system and method for processing buyer offers of products, to diminish the occurrence of similar, repetitive offers whereby buyers "ping" to determine a confidential floor price for the products. In one embodiment, a first offer is received from a buyer, the first offer including a plurality of offer...http://www.google.de/patents/US6510418?utm_source=gb-gplus-sharePatent US6510418 - Method and apparatus for detecting and deterring the submission of similar offers in a commerce system