Today’s featured promo on MacUpdate offers Pixelmator for US$29.99 (49% off, retail $59). “Pixelmator is a layer-based image editor. You can quickly create layers from your photos, other pictures, from selections or even your iSight. Yes, Pixelmator can add a layer to your composition directly from your Mac’s little camera. Not only can you link and arrange added layers, but Pixelmator allows you to blend layers, change their opacity, create clipping masks or even add layer masks to hide some portions of layer.” Pixelmator requires Mac OS X 10.4 or later.