Wine columnist Dave McIntyre of the Washington Post has lots of nice things to say for Malbec wines from Argentina, while in the Nashville Tennesean wine writer Frank Sutherland offers praise for the Carmenere wines of Chile. At Wine Review Online, Robert Whitley posts the results of the first Winemaker Challenge tasting. And Dale Robertson, writing in the Houston Chronicle, reports on a Twitter live tasting competition in which Messina Hof wines hold their own against a bevy of better known wines. JG