Booing
v. The audio equivalent of tweeting, booing first gained attention as a tool for BBC reporting on the G-20 protests. The brief clips are posted via iPhone to the “sound-sharing” site Audioboo.fm.

Green trade war
n. The global conflict predicted if the US adopts carbon caps and imposes protectionist tariffs on goods from nations with less-stringent environmental regulations.

Decision engine
n. Microsoft’s attempt to rebrand the term search engine. Its new service, Bing, delivers fewer results than Google, which Redmond claims is a remedy for “search overload.” It follows Wolfram Alpha’s “computational knowledge engine,” which answers queries from its own limited database rather than the Web.

Psychedelic frogfish
n. A species of carnivorous fish discovered last year off the coast of Indonesia. Its orange, blue, and white swirls are worthy of an acid trip. Even trippier, the fish vanished from sight soon after ichthyologists named it.

—Jonathon Keats (jargon@wired.com)