While screwcaps are inreasingly being used, America's wine industry is baffled about their future. Depending on who is asked, screwcaps are 'poised on the edge of phenomenal success' or are 'comfortably settling into a niche status,' according to Wine Business Monthly's annual closure research. 'The most adventurous & savviest wine consumers have seemingly embraced the closure, while traditional & less wine-educated consumers still seem unsure of what to do,' the California trade publication said. Its survey of 237 domestic & foreign wineries showed that respondents using screwcaps increased from 5% in 2004 to 25% in 2007, the publication reported. The Nielsen Company, which tracks supermarket wine, found the number of brands offering at least one screwcapped wine jumped to 214 from 120 in the 9m to December 2006.