"Obfuscation is the concealment of intended meaning in communication, making communication confusing, intentionally ambiguous, and more difficult to interpret." (from Wiki)
Today is Plain English Day! The Plain English Campaign has, since 1979, "been campaigning against gobbledygook, jargon and misleading public information." If you're within half an hour of The Brewery (London EC1Y 4SD) then get on down to the 30th Plain English Campaign Annual Awards 2009 (starts at midday UK time). Not to give too much away but as of today Mandy has another award!
I touched on a similar subject last week when discussing the Overarching outcomes of outsourced output about the need to 'ditch the jargon that is the daily fare of all public bodies so they can "communicate effectively with local people"' ...[Link].
Update: their Grammar Quiz has just left my ego a bit deflated!