Speaking in ways commonly used to
converse in text on the
internet.
Including but not limited to; the (often unnecessary) abbreviation of words, acronyms special characters (@,~), numbers (l33tsp33k), *actions*, /me command, "ooc" and other RP references, emotes, ASCII, Real or Pseudo Programming Code, and HTML tags
The recent
popular use of text messaging on cell phones seems to have made the shortening of words much more common than ever before.
Also: netspeek, netsp33k, n37sp33k, and other variations.