Some random updates to this that you probably already knew.
1. It is possible to register the coordinates by somehow using a layer of fake links over the canvas. It registers the coordinates instantly when you select a link. It was done on http://painitegames.com I think.
2. The font is a proprietary font used all around the 3DS interface. Icon fonts do not work and sometimes results in icons of 3DS buttons that are stored in the font.
3. The New 3DS browser is significantly more powerful and supports videos and larger pages. Way better for browsing.
I don't know if this would appeal to people the way it used to. Most kids have access to smooth, optimized app experiences on their tablets and smartphones, as opposed to us, who grew up mostly on DSi. I'm not saying a boom in traffic is impossible, but I find a significant one would be unlikely.
