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Ability to watermark multiple photos at the same time would be a lifesaver for photographers. Check out SmugMug’s go to on this. Please incorporate same thing.
You guys seriously need to level your watermarking stuff up. Add an option where your users can place watermarks on multiple files at once. Jesus Christ I have hundreds of files and I simply can't go 1 by 1 by 1 to place watermarks on them. It's highly inefficient and counter productive! And as far as I know Dropbox is about productivity, so you need to level this thing up!