I noticed that facebook backtracked on their search bar. When it first launched it was completely non-obvious that it was a text input. A few weeks later they

I noticed that facebook backtracked on their search bar. When it first launched it was completely non-obvious that it was a text input. A few weeks later they added a negative emboss effect. I agree, it's a nice style, but I think we'll see it settling on a middle ground regarding 3D effects on UI elements. I also think some of the more extreme proponents of the style may be younger designers that haven't already been through several of these cycles. :)