Watermark Tool (http://www.watermarktool.com)

As promised, I’ve launched the newly designed Watermark Tool for you all to play with. Besides the new design, there’s a few new features adding to the watermarking process itself. The biggest addition is probably the fact that you can do bulk watermarking for up to 10 images at a time.

The site is still 100% free with no signups or registrations required so be sure to check it out if you ever need to protect your images.