Fully Automatic Iron Golem Farm Tutorial - Minecraft 1.8

A tutorial on how to build a very simple and super efficient iron golem farm. Get ready to have (infinite) iron for days! This was built in Minecraft 1.8 and works perfectly (FYI, the iron golem not dropping iron is now fixed in the latest 1.8 snapshot). And yes, this does work in 1.7.4 on up.\r
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Use upside-down slabs for the second platform instead of full blocks for best results. Upside-down slabs occupy the top half of their block space rather than the bottom half. Place a slab upside-down, by right clicking the top half of the side of another block, if the player wishes to place it on the side of another double or single slab block.