Well, I'm writing this reply on my DS Browser in bed. I couldn't watch the video you posted though, due to it not being 'flash enabled' or whatever.
It's okay, does it's job I guess. It is fairly slow loading pages so it's not recommended for the impatient people of the world! Typing on it's a bit of a chore too, takes ages! lol!
That's about it really? I can't type any more (it's taken me nearly 10 minutes to get this far!) Any other questions, gimme a shout.
