When Google soft launched its new Gmail composer last October, it did so in a preview release that gave users the option to test it out and turn it off. Not so anymore, because starting today that resizable, pop-up window is now the default interface for its web Gmail client. The widespread change was apparently spurred by abundant positive feedback from users that found the new layout bolstered multitasking -- a claim we're not entirely sold on. Regardless of your feelings towards this permanent sw
