At some point I did not notice, perhaps the last update, I find Microsoft's ICE now accepts NEF files and no longer requires JPG.
May not be up to the most demanding pixel peeping, but it works pretty nicely for tourists traveling light.
For some reason an internal server error prevents showing even a very downsized image. Will try again later. (Worked on modify with a new file name. This is the "Tiger's Nest" in Bhutan in difficult morning light.