I've had this idea in my mind of a little symbol for as long as this site has been around. Yeah, about three years. It transformed from capital PD to lowercase ones, hugging each other. Like an eight with two lines trapping them forever. It wasn't until a freak accident where I ended up with this. I hadn't even realize that it looked sort of like a p and d until after I watermarked 15 images and posted them on a forum. Talk about coincidence.
I added the stupid logo to the icon in the url bar. I hope you all find it annoying. 
To be honest, it somewhat reminded me of Shiseido.