I just sprinkle it on the salad. Nice perky-tart effect, much like when you just sprinkle on some lemon juice. Goes well if you have walnuts in the salad.
Sweetness (real or artificial) is an appetite stimulant. Stevia is just as guilty of that as sugar or aspartame or saccharine. If you want to lose weight, you need to stop stimulating yourself. Real sweeteners at least have some calories associated with them, which satisfies some of the appetite they stimulate.
I'm hypoglycemic and gotta watch the pre-diabetic excitement, too. I got out of the habit of sweetening things and a whole new world of taste opened up. It's rare that I sweeten anything, but when I want sweetness I use something real like sugar or honey.
And honestly, if you load up with some plain fruit or veges at the start of a meal it makes a huge difference.
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson