Camera Effects for Windows Phone 7.5 or higher adds live effects and frames on the camera and your images. You can save the results and share them via Facebook. Sample effects: Warhol, Schindler, Lomo, Pencil, black and white, sepia, negative, watercolor, City, Pixelate, Flip Vertical, Flip Horizontal, Posterize… This app retails for $1.49/£.99 and you can download it here.