No post seems to have generated the sheer amount of comments and updates as the yogurt post just a few days ago.
Speaking of which, ladies and gentlemen, could you please post your comments publicly so that everyone can share?
You know who you are. Don't make the CC shame you.
Here's the best of the list:
 2% organic milk works best.
CC: Experimentally verified and confirmed!
 If you have a pizza stone, pre-heat the oven to about 200°F for about 2-3 hours. If the stone is on a different shelf than the container, it will ensure that the oven stays warm at the desired even temperature of 180°F even in the coldest winter.
CC: DUH!!! Simplicity itself. How obvious in retrospect.
 If you want a thicker yogurt without the fat, add in some milk powder when boiling the milk.
CC: Not tried but makes complete sense.
 If you want "Greek yogurt", you must drain the fresh yogurt in a cheese cloth for about 6-8 hours.
CC: Yep! and the drained whey is muy muy delicioso! Do not waste.