I love this recipe. I've made it twice, and was looking it up today to make it tonight and can't believe the other reviewer gave 3 stars, though she's correct about the extra dressing.
This is simple to prepare and very tasty. It makes plenty of vinaigrette (I had enough left in the bottom of the bowl after I served the spinach that I was able to pour some vinaigrette over the salmon), and the salmon pairs well with the tangy oranges. Next time I might use a bit more spinach--overall a good recipe that I will make again.