There have been a few mentions that something like this would not work on cloudy days.

Without seeing further evidence to the contrary, I'd be more inclined to believe that it wouldn't work as well as it would on sunny days, but would still work better than conventional indoor lighting.

As gray & dreary as it may be outdoors when the sun is hiding behind a cover of clouds, it's all really more of a mental illusion. Measure the light with a light meter (as a photographer would use) and you'll find it's still remarkably brighter outside than it is inside with all the lights on.

"5". That's what I put on my census form before mailing it back. The other questions were left unanswered.

The US Constitution calls for a census every 10 years to take a count of the people which is crucial for getting the right number of congressmen allocated. The US Constitution further reserves everything to the states or to the people that is not enumerated in the constitution for the federal government.

There are 5 people in my house. That's all I'm volunteering. They don't need to know my name, how old I am, what color I am, what religion I practice, my sexual orientation, etc. The rest is none of the census department's business.

Someone pays me to take photos & thinks they can make their own prints. But they don't own the photos. I do. Then they get all cranky when they go to Walgreens with the crappy 800 pixel (long side) image I gave them for web use & wonder why one of two things happens:
1) their 4x6 print looks like crap
2) the store manager won't print watermarked photos without a signed release from the photographer

I copyright law f'd up in this world right now? Certainly! But right now this is how it is. I do remain open to Something Better but haven't seen it yet.

I'm sure we all remember this demonstration from a couple of years ago using Wiimote hacking:
http://www.youtube.com/watch?v=Jd3-eiid-Uw

Get rid of the clunky IR hardware, track eye movement directly, and you've got the kind of potential for desktop sexiness that only The Steve could bring us.

Too powerful for normal users, too limited for power users.

I'm a semi-professional photographer, have had art shows & a couple of photos published. Everything I do, everything, goes through Gimp before the public sees it. There is a common misconception out there that the Gimp is limited to hobby use only. I've found that pretty much anything I could ever want to do can be done with Gimp if I only take the time to learn how. The same is true of Photoshop.

Douglas Adams already foreshadowed a scheme like this in order to be able to afford the fabulously expensive dinner at Milliway's.

Douglas Adams is only dead for tax purposes, BTW.