Chicago - Metromix, the online entertainment listings and reviews sites network joint venture between publishers Gannett (NYSE: GCI) and Tribune (NYSE: TXA), reported on Tuesday that it has doubled its revenue and Web traffic since its launch in October 2007. The Metromix sites in 35 markets attracted nearly 4 million unique visitors in October, according to Omniture internal tracking software analysis.

McLean, Va. - Gannett, the publisher of USA Today and 84 other daily newspapers, said on Monday that it has formed a joint venture with Chicago-based Tribune Interactive to expand a national network of local entertainment websites under the Metromix brand.