I found the blue boards vastly amusing. It's weird, I take like 20-30 photos a day outside of HK but when I'm here I don't really take that much (though many times recently I wished I had a camera with me). It's beginning to feel a bit like home - you don't really snap photos that much when you're going about your normal life.
I'd love to have a decent camera so I could play around with the artistry more, I've been told I have a pretty good sense of what to shoot but right now it's basically point and click.
I didn't really visit any residential areas so cannot vouch for the baby rats thing. Had some great dim sum at my hotel though... I usually rather dislike fried rice (steamed is great) but the dish we had there was VERY tasty.