Two months agos I found an image of mine with DT watermark being used in a blog at Wordpress. I contacted the blogger, but he did not remove the image. Yesterday I sent a note to WP support and today the image was removed.
It's only a pity the blog remains online.

PS: DT was informed when I found that image and they said they had contacted the site (WP? The blogger?). It seems they don't bother to follow such infractions, and this seems the rule in any site (I have the same experience with IS, FT and StockXpert).