Today’s featured promo on MacUpdate offers ImageViewerCM Plug-In 2.4 for US$4.95 (50% off, retail $9.95). ImageViewerCM Plug-In is a contextual menu for the Finder designed to let you easily view the pictures in a folder. It can open many image formats: JPEG, GIF, TIFF, PNG, BMP, PSD, EPS, AI, PDF. ImageViewerCM Plug-In 2.4 requires Mac OS X 10.4 or later.