I had a long response going, but I canned it. Or maybe Mozilla ran out of memory and ate it. I can't remember. So anyway, short version for Ryvar:

Storage- Holographic is really just a 'holy shit' because they finally got there; storage in general is huge, and while the power consumption (of everything) is a problem, there are a lot of ignored solutions for those things that are pretty nice.

Not everything has to be 1/10th the size of... say a Newton MP2100 for an oldschool example, and with the right CPUs/systems-on-chip (*cough* SuperH), you can certainly squeeze out golden-era performance, where 'golden-era' refers to that brief period when laptops could actually survive a day without seeing a charger. That only applies in spaces were power use is a problem, too, so...

Anyhow, I think I'm agreeing with you, but you're saying we have to wait for things to scale (or for laws of scaling to be broken), while I'm saying we could build cool shit if we recognized what we had. ;) Of course, this means I bank on software becoming more efficient to meet such cases, which we all know doesn't happen, so I'm a dreaming moron.

Single Sign-Ons are two problems. One's for the user- "How the hell do I keep my dealings secure without having to put 500 passwords on post-it notes on my monitor?;" the other's for the service providers- "How do we track/trust this user to use our e-Digital-Super-Mega-Ultra-Commerce systems?" Two different problems; the former is solved by building a better keychain*, rather than renting a locker for them... the latter can't be solved easily, and shouldn't be bothered with by anyone other than banks and governments, neither of which have perfect success.

I don't know how much I trust GM, given the killing of the EV-1, but hydrogen does have the advantage of being something that can support the greed-drive *and* has the chance to be a bit healthier for us overall.

What does bug me is the sheer amount of energy that will still be expended shipping the crap around.

So, that's my opinion, whee. Let me chalk up inkjet-based manufacturing techniques here as something for all three lists- printable (and I'm just talking factory-printable, not bothering with the usual Wired/Media-Lab/PopSci hype) displays really seem like a much bigger deal to me than webserving lightbulbs.

Once the manufacturing kinks get worked out, anyway...