Looking to add watermarks to your digital photographs? If you are a Photoshop pro, you already know how to do it. But for the rest of us there is a new service called PicMarkr that makes watermarking digital photos fast, easy, and free. Just upload your photos, or point them to your photos on flickr, tell them the details of the watermark that you want, and they take care of the rest. It doesn't get much easier than this.