The stylus functions as analog control.Seta-San said:
Maybe it's because I've used PDA's before but it works for me; on the other hand, I have a hard time getting used to the thumb strap.
So far I've mainly seen it being used for blowing; e.g. blow out a candle, blow away clouds. I wonder if a strong wind outside could influence gameplay ^^;
Some DS games have special features when you put a GBA game in slot 2.
I personally liked the Metroid demo a lot; many of the games currently out are indeed very gimmicky though, and only time will tell if that'll change. I certainly hope so, as one can only do a "paintbrush version of lemmings" so many times.
Actually, the GBA2 so far is only a rumour, but we'll see.