LargeType2 shows your selected text at huge font sizes. Hooray! Drop it in your app folder, log out and back in again, then experience a brave new world of shadowed white-on-black text and draggable translucent windows! Just choose "LargeType" from the Services menu, or right-click and go to Services in the handy contextual menu. For even more convenience, assign "LargeType" a keyboard shortcut th