The bottom edge is the most pleasurable edge to use. Grab a phone, any phone, and slide your thumb up over the bottom edge, then back. Go on, do it a few times. Feel good? Yeah, our extensive research suggests this feels pretty amazing to pretty much everyone.

Hmmm… Feels good!

That’s why we’ve given the bottom edge to you, the developer, for your app. It’s the best one and we thought you could make the best use of it. If you want to create a truly /”Ubuntu!/” experience for your app you’ll want to invest in thoughtful but also creative interpretations of this edge in your app.

— from ‘Loving the bottom edge’ – http://design.canonical.com/2014/03/loving-the-bottom-edge/

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