Abstract: Fuel cell systems, as well as related components and methods, are disclosed.

Abstract: Parties involved in transacting business in an E-marketplace (E-marketplace participants) each identify and submit to the E-marketplace relevant characteristics related to their privacy-use needs (those that they adhere to, referred to as “privacy policies”; those that they require, referred to as “privacy preferences”, or both). The privacy policies and privacy preferences of the E-marketplace participants are then matched up, and those with matching characteristics are given access to each other, while those that do not match up are denied access to each other. This serves as a search filter to match up consumers with providers.

Abstract: Parties involved in transacting business in an E-marketplace (E-marketplace participants) each identify and submit to the E-marketplace their P3P policy and/or other relevant characteristics related to their privacy policy needs (those that they adhere to, referred to as “privacy policies”; those that they require, referred to as “privacy preferences”, or both). Submitted with the privacy policy is a digital signature that is tied to the owner of the web objects to which the privacy policy pertains. Using a digital signature assures the integrity of the privacy policy since it travels with the privacy policy and thus refers back to the original sender of the policy rather than the middleman (the E-marketplace), and if the document (the privacy policy) to which it is attached has been tampered with, the digital signature will be invalidated.

Abstract: Parties involved in transacting business in an E-marketplace (E-marketplace participants) each identify and submit to the E-marketplace relevant characteristics related to their privacy policy needs. When it is determined that two or more participants are collaborating in a transaction (e.g., a supplier and a shipper; two suppliers; three buyers), the privacy policies of the collaborative group are aggregated to produce a single policy that represents the primary policies of the collaborative transaction being presented by the collaborative group.