Figure out what you want to print. There's a fairly large variation in build area, so if you're wanting to print stuff the size of textbooks you're going to want a larger printer. Likewise, most extrusion printers have a minimum print resolution in the 0.5mm or thereabouts area, so if you want fine detail you may be wasting your money on an extrusion-type printer. Printers with better resolution are usually photolithography-based and an order of magnitude more expensive, at which point a commercial print service like shapeways seems a lot more attractive.
With any extrusion-type printer, I think the most important item is that it's popular, because you're going to spend time debugging and adjusting and generally fussing around with it; if you get a snazzy brand-new design you're the beta tester. If you get something that has three years of hundreds of people working with it, all the problems you can encounter have already been encountered and dealt with.
If you want to get more printer for less money you can build it yourself: there are a variety of plans where you buy a printed set of parts, source all the structural parts yourself, and make your own. What I said above about finding one where design and implementation issues are well-known and there's a support community in place goes double for this option.

I strongly recommend that you only start down the 3d printer path if you have projects for which you already have need for printed items; if you get one just because it's the hip thing to do for geeks, you're likely to be wasting your money. With that said, once you have one, you suddenly start printing a whole lot of things you never thought you would, because you can: I have friends who print live animal traps, plumbing parts, and light bulb fixture components now that they have 3d printers.

My understanding was that the primary drivers for using titanium in aerospace were heat and fatigue characteristics, and that otherwise aluminium was almost always a better choice, if the design was capable of using it well. (Similar specific modulus of elasticity, so if you have the space you can use large-diameter tubing to get lower weight for the same performance.) As such, I'd expect to see automotive titanium used only in areas where volume or fatigue is a big concern. Are there other areas in which it would do well?

If you don't already know this: you should consider the resolution you need pretty carefully. If you're printing stuff for 1:48 or larger models, an extrusion-based 3d printer will probably do okay for you and they're not too expensive: some exist under $500. But if you're working with smaller scales than that, you're likely to need some sort of photolithography setup and those are expensive to buy and surprisingly expensive to run because of the raw materials cost; it's hard to justify buying one for yourself compared to making the models and having shapeways.com actually print them.
But if you're working larger-scale stuff, it's amazing how much use you can get from a cheap extrusion printer; once you have one, you start using it for scads of other things you never thought about doing previously.

Well... it was 5% until Ralph Nader was polling 8%, at which point they changed it to 15% to make sure he didn't get heard. So there's not really any reason to believe that a third party polling 22% would actually get heard: they'd just change it to 25%. It's a rigged game: http://en.wikipedia.org/wiki/Commission_on_Presidential_Debates#Criticism

I don't have any written records. I talked to a guy who was a glider pilot and he had lots of stories about how well they could have worked and how poorly they did work because of lousy surveying of landing ground. He'd seen ones get yanked into pieces in snatch pickups and was of the opinion that the reason it was rarely used was twofold: risk, and higher-ups were deliberately sabotaging the delivery of snatch-recovery equipment (poles and lines) because they thought the risk outweighed the benefit.

In WWII we were recovering entire gliders this way, not just people: http://www.silentwingsmuseum.com/pdf/RetrievalSystem.pdf -- a history of airplane/ground retrieval systems specifically relating to the effort to pull Waco CG4A gliders big enough to hold 15 people, from the fields where they'd landed back into the air and tow them back to the launch airbase without the tow plane landing. It was dangerous work and pretty often it ended up just tearing the glider into pieces but it was successful a fair amount of the time.

The other thing that's nice about cruising at high altitude is you go faster for the same fuel burn, since the power required to overcome air resistance varies as the cube of airspeed. An airplane that's doing 90 knots at 2000' will do 120 knots at 17,000' (if it can get there.) So even though your plane has less power at higher altitude, it goes faster -- and that, too, can reduce total fuel used, since you burn a bit more fuel but spend less time on the whole flight.

And by the way, burn-and-coast is actually a viable fuel economy strategy in cars if you don't gun it: if you accelerate gradually to somewhat above your best fuel economy speed, then coast (and get free distance) you can under some circumstances exceed the fuel mileage of constant-speed driving. http://en.wikipedia.org/wiki/Maximization_of_fuel_economy#Burn_and_coast has more details.

They all get it, because what they're doing is sitting on the upwash of the air curling off the tip of the wing ahead of them, and that doesn't change. (Well, it's a tiny bit smaller for the second plane than the first, because the second plane is sitting on the upwash from the first one, but any subsequent planes will have their weight offset by the same amount and have the same resultant upwash.)
One interesting effect of this is that the same upwash is curling off the other wingtip, as well. So you could have two planes surfing on the lead plane's wake, and two planes surfing off each of those planes, and so forth. You run into geometry issues: there's not enough room to fit four planes in line behind the two planes following the leader. However, a single plane in that location might manage to be in the upwash of *both* planes ahead of it.
You could have a diamond/triangle of planes, with the lead plane expending the most energy, all the edge planes expending somewhat less, and all the planes in between spending 2x less.

That entirely disregards the jetwash/propwash problems of flying right behind another plane (which are _significant_ -- when you do a two-minute 360 degree turn and hit the disturbed air from two minutes ago it really jounces you around, and this would be more like the 0.1 second old turbulence) but it's possible in theory.
(Sometimes you'll see geese flying in multiple-armed v's as they're taking advantage of this.)

I vote this, and would add a couple of smoke and CO detectors.
I've also found that, for my lab at least, having several big boxes of baking soda around is really nice. They'll put out small fires with much less cleanup mess than a fire extinguisher, and they're much more attractive when the fire is flaming kerosine/gasoline, are quite handy when the spill is hydrochloric acid, and if it's a basement lab would probably help the mildew smell so many basements seem to have.

As other people have said: boom microscope. Available off ebay new for cheaper than many used scopes, with a working distance of almost half a meter, which is wonderful.

My work surface is a whole gigantic mass of pine 2x4's glued together face-to-face. It's very sturdy, resists burns well, and I don't feel the slightest bit of hesitation at putting screws into it to hold things down. I had a job involving lots of LED's, so I drilled a hole the size of a standard through-hole LED and would stick each LED in it and solder the wire harness onto it. I screw contoured oak bits onto it for tubing-bending, bolted the lathe and desktop mill directly to it, drilled a hole in a third-hand and nail that wherever I want it so it won't tip over. Awfully convenient. And if it finally has too many holes/burns/problems, it'll cost me about $40 to build a new one if I buy new framing studs, or a lot less if I just keep accumulating scrap lumber that I'd otherwise burn in the fireplace.

While I agree with your assessment, I think we need to have a Democrat as president to successfully address exactly the sort of civil rights issues you're talking about, because when a Republican is president, Republicans won't openly criticize what he's doing. It's my opinion, based on observation, that the only way to get reductions in the power of the executive branch is to have Republicans force it on an unwilling administration. Democrats are too scared of being seen as soft on crime and terrorism to ever effectively behave like this.

I use Diaspora. I thought -- and think -- it's eerie just how much G+ looked like diaspora, and to some extent still does. They're both working off the same mindset about how networking should function. But once G+ came up, activity in my diaspora circles dropped to a standstill. It appears to me that most all the people who would use diaspora chose to spend their limited time on G+ because of the networking effect.

I can't prove anything. But the last two serious bike-car crashes I had in which my head was involved, the doctors had to put stitches in my jaw and ear right up to where my helmet was, but no stitches above that point. Now, it may just be coincidence that all the damage from glass cuts and abrasions stopped right where the helmet started, but I doubt that, insofar as, y'know, it's hard to get glass cuts through 3 cm of styrofoam and a hard shell covering.

Roads were made for bicycles, in a very literal sense. In the 1890's, cyclists pushed for legislation to get the first prepared-surface roads put in place. That's how the League of American Cyclists got started: as a lobbying group for getting better roads for cycling.
Cars then came along and took over those roads.
And yeah, ever since gas prices went through the roof more people are riding bikes. That trend is going to increase.
For the record, when I'm on a bike I stop for every stopsign and stoplight, and I've been hit twice by cars that didn't do the same. (Which is a large part of why I stop for every stopsign and stoplight.) Cars regularly violate traffic laws. So do bikes. One difference is that cyclists very rarely kill people when they violate traffic laws. That doesn't make it right, but part of the underlying cyclist/motorist tension is that cyclists think they're not going to hurt anyone by running lights, while the same action by motorists is seen as being murderous behavior, and as such motorists resent the hell out of seeing cyclists do it. (and that's another reason I don't run lights: because it pisses people off.)

Since none of the other commenters replying seem to have yet touched on this, I was involved in the design and manufacture of ultrasound imaging devices that were fed into the femoral artery and snaked up to image the heart from the inside, aka invasive ultrasound.

I'm in Colorado. My state rep showed up at my door, unannounced and unasked, to ask if we have any concerns with how well she was doing her job. Not her people -- she, herself. Going door-to-door in her district, on foot, talking to people, whenever she had time. I can get behind that kind of politician.