Metadata Working Group, a company consortium to advance the interoperability of metadata stored in digital media
"Moog Droog" is an ironic anglicised spelling of the Welsh phrase mwg drwg ("bad smoke"), slang for marijuana, making a pun on the Moog synthesizer (and/or its inventor) and the slang word "droog" (based on the Russian for "friend") from A Clockwork Orange.