Related:

• UDP /U-D-P/ v.,n. [Usenet] Abbreviation for Usenet Death Penalty.
  Common (probably now more so tha and frequently verbed. Compare IDP....
• Usenet Death Penalty [Usenet] A sanction against sites that habitually spew Usenet spam.
  This can be either passive or active. A passive UDP refers to the dropping of all postings by a particular domain so as to inhibit propagation....
• Internet Death Penalty [Usenet] (often abbreviated IDP) The ultimate sanction against spam-emitting sites - complete shunning at the router level of all mail and packe
  as well as Usenet messages, from the offending domain(s). Compare Usenet Death Penalty, w...
• PD /P-D/ adj. [common] Abbreviation for `public domain', applied to software distributed over Usenet and from Internet archive sites.
  Much of this software is not in fact public domain in the legal sense but travels under various copyrights granting reproduction and use rights to anyone who can snarf a copy....
• ISP /I-S-P/ Common abbreviation for Internet Service Provider, a kind of company that barely existed before 1993.
  ISPs sell Internet access to the mass market. While the big nationwide commercial BBSs with Internet access (like America Online, CompuServe, GEnie, Netcom, etc....
• black hole n.,vt. [common] What data (a piece of email or netnew
  or a stream of TCP/IP packets) has fallen into if it disappears mysteriously between its origin and destination sites (that is, without returning a bounce message)....
• PD: /P-D/ adj. Common abbreviation for `public domain', applied to software distributed over {USENET} and from Internet archive sites.
  Much of this software is not in fact public domain in the legal sense but travels under various copyrights granting reproduction and use rights to anyone who can {snarf} a copy....
• NSP /N-S-P/ n. Common abbreviation for `Network Service Provider'
  one of the big national or regional companies that maintains a portion of the Internet backbone and resells connectivity to ISPs....
• AI /A-I/ n. Abbreviation for `Artificial Intelligence', so common that the full form is almost never written or spoken among hackers.