Sweet yogurt dressing

Yesterday, I tried putting yogurt on my fruit salad as a dressing. It was too thick and (since it was plain yogurt) less sweet than I expected. Undaunted, I tried it again today, but with about a teaspoon (or so) of sugar and as much of milk to the blob (1/3 c?) of yogurt. It thinned out and was nicely sweet, and went very well with a salad of mixed greens, kiwi fruit, and blueberries.

I think with some cinnamon or other sweet spice in it, it would be awesome with strawberries, actually, or peaches.