The link below links to an Anti Piracy part of the nintendo site, on this site, it shows pictures (and names!) of a few flashcarts, makes me think Nintendo is just promoting piracy, the way I see it is Nintendo is basicly giving you a way to pirate their system example: They have an R4 picture (you can see "R4" on it as well) then you google it, find a site to buy it (you'd be lucky to get a 1:1 clone ofcourse) and you now own an r4 and begin pirating. THIS IS JUST MY OPINION, please no need to flame me or anything.
http://ap.nintendo.com/detect/photos/devices/copiers_ds.jsp
http://ap.nintendo.com/detect/photos/devices/copiers_ds.jsp