Primary Classification:
  H. Information Systems
  H.3 INFORMATION STORAGE AND RETRIEVAL
      H.3.5 On-line Information Services
          Subjects: Web-based services

Additional Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.5 Local and Wide-Area Networks
          Subjects: Internet (e.g., TCP/IP)

  D. Software
  D.2 SOFTWARE ENGINEERING
        D.2.11 Software Architectures
            Subjects: Domain-specific architectures

  K. Computing Milieux
  K.4 COMPUTERS AND SOCIETY
      K.4.4 Electronic Commerce
          Subjects: Distributed commercial transactions
  K.5 LEGAL ASPECTS OF COMPUTING
      K.5.1 Hardware/Software Protection
          Subjects: Copyrights

General Terms:
Design, Legal Aspects, Management, Security, Standardization