Well, just for you, I reduced the sugar by 1/2 cup and replaced with Splenda.

Edited to add: Well, we now have tried the cake and as grandfunkdave said, "It's so good ..."

However, I have a confession to make. I don't generally buy plain yogurt (which is what the recipe calls for) because it's difficult to find it in a small size. I went to the store and scoured the yogurt section. I finally found an individual size plain yogurt. It wasn't until I had dumped the yogurt into the batter that I noticed the words, "Key Lime Pie." . What a stroke of luck that it was a citrusy flavor and not something weird.

Anyway, as indicated above, I replaced a half cup sugar with Splenda and reduced the weird salt amount to two teaspoons. Still absolutely delicious. My partner said, "It's a keeper. I love that crust."