I encourage every architect in the world to design custom light switches for every building and position them in locations unique to each building. That way, everyone who enters any building has to first figure out how to identify and operate the light switches.

Sorry I'm so crabby about this. But, by golly, Google's new "button" really calls out for the question "Why?" And to think on top of it all, Google has to go through a lot of trouble (probably Javascript trouble, though I haven't studied the code) to make these silly "buttons" tabbable. Pretty soon, every Web 7.0 kiddie will try to replicate Google's "buttons" and fail to make them tabbable.

Agree: "Desktop clients still have a bright future thanks to stuff like this."