[whoisthemachine]

If only Venus had a moon like ours to encourage rotation.

[ultratalk]

Duplicate of my previous comment (https://news.ycombinator.com/item?id=47887938)

  If I remember correctly, the habitable-ish cloud layers have super-fast winds that circle the planet once every 4 days or so. [0]

  [0] https://en.wikipedia.org/wiki/Atmospheric_super-rotation

[3form]

Moon actually slows down Earth's rotation: https://en.wikipedia.org/wiki/Tidal_acceleration#Effects_of_...

[kraquepype]

If you could increase rotation somehow and place a moon sizes object in it's orbit, maybe you could improve the magnetosphere and reduce volcanism by inducing plate tectonics.