IMHO this is pretty limited in its usefulness. First, its SD only. Although a lot of digital cameras use SD, a lot use others. I have two digital cameras. One uses Memory stick duo, one uses Compact Flash. So I'm screwed.
Second, what can you do with the photos after you've fiddled? I guess post them to other wii owners? Have we seen whether you can also send 'normal' email?
And why cards only? why not from my computer? I can't even plug anything in via USB I don't think.
I'm not against nice multimedia things, but do it properly. It just seems half hearted. I hope they can update firmware to add new stuff.