I'm curious to know you guys' stance on those things!
I've personally always been against them. They almost always lead to piracy, which I'm strictly against. I will however admit that I just got an R4 a while ago, but not to pirate anything with. I currently own 35 DS games, and carrying multiple cartridges around can become quite tedious when traveling. This why I ultimately decided on getting an old R4 for my old DS Lite. While I'll always stick to playing RPGs and other big-scale games on real game cards, I figured the R4 could be handy to store a lot of smaller scale games, like Mario Kart or puzzle games. Yes, it would require me to carry around my DS Lite next to my 3DS instead of carrying around the 3DS and a game case, but I still feel like using the R4 will just be more convenient for me. But let me reïterate once again that I won't pirate any games with it. I am against piracy, and I'll always be. You should not download games you don't own. However, if you own a game, I don't see a reason you shouldn't be allowed to carry it around on an R4 if you want.
What's you guys' stance on this? Use a flashcart yourself?