ELSPA: 90 per cent of US gamers use DS piracy chip

[Coglestop]

Standard exaggerated claims made by anti-piracy groups. Do people pirate games, YES, do 90% of DS owners pirate games, NO. I'd go as far to say that 90% of DS owners in the US don't even KNOW what an R4 is.

Of course there are some legitimate uses for the R4 anyway. Assuming you believe that home-brew console hacks are a legitimate use(which I do, I even played around with DS programming and threw together a quick demo before)

Using cracked PSP firmware is much more common than using a flash-cart.