I read about this in cooking light and thought I would try it since I cannot seem to ever find the 0% fat Fage anymore...?! I had bought the stonyfield fat free plain yogurt sunday, and tried it last night. It totally worked and was so easy! all i did was:

put a mesh strainer inside a bowl, and lined the strainer with a paper towel. Poured the whole container (it was one of the big ones) into the strainer/paper towel, covered with saran wrap, and refridgerated overnight. The whey/liquid strains through, and the bowl was at least half full this morning.

So I had some thick creamy fat free yogurt with fruit and cereal. I was so excited! it still has that slightly sour taste that plain yogurt has, but I'm used to that.

Just thought I'd share!