I use my own watermark instead of the dA. Sometimes the way their watermark work's just isn't enough. I actually use black and white, using my dA name along with @deviantart, then put both the black and the white on around 35 or 40%, then I use the arrow keys to bump the white layer up 1 and to the side 1. It makes a beveled glass look and shows the image through better. It also makes it impossible to use the clone brush tool to remove it.
Many people tell me "Oh watermarks are ugly, I don't care if mine are stolen." But... after all that hard work? Really??