I'm conflicted when it comes to the DS chips. I like how they're small and cool looking, but I feel like they're brittle so I can't carry many around unless I carry the game case. With the GBA carts I would just throw a couple in my backpack and not worry those things were durable.
EDIT:
The DS is probably the quirkiest game system out there with some of teh most interesting and weird games to ever hit the stateside. And speaking of quirky games I just read
this article about a game called Lupis. It's in its prototype form, but it's a game that will teach girls how to have great sex at a young age, although their is no explicit sex I think. some favorite quotes from the article.
The idea is to actually inform gamers on sex, and as Heather stated, "improve actual sex in the world." And you thought Miyamoto was ambitious. The idea is a bit obscure, however, since the idea of having sexual implications isn't even supposed to be apparent at first. The idea of parents buying this game for their kids without knowing it simply amazes and horrifies us. But lets just move on.
Be sure to read the article and stuff before you go off on the game though.