My comments
The DS could be a great system. Nintendo, though, seems reluctant to devote many resources for software, which I don't understand. Third parties don't seem terribly inclined yet to think unconventionally or even develop anything significant at all when the PSP provides considerably more power. If nothing changes then the system will largely be a joke (though a decent value considering the price tag). Especially with GBA2, the seventh pillar or whatever, on the horizon. The potential is there, but only HAL seems to have done much with it so far. I like how its being underpowered invariably encourages developers to create 2D games (got my home consoles for 3D, thanks), but hate how none so far have been much more attractive than what the GBA has offered. It's ridiculous.
Then, as someone who rarely plays videogames outside the home and already owns an mp3 player, I largely see the PSP as a system that robs resources which would otherwise be for the PS2, probably just like the GBA2 will do in the future. So that's a little irritating as a consumer. But whatever. The system has a few really good games, Lumines in particular, and I'll probably get one down the road when something more significant comes out (hopefully a price drop by then). And I'm sure it's going to have a long lifespan.