Alessio 
So, when I heard for the first time the term "birds of a feather" it was completely new to me. And it was pretty curious to me as well that @opensuse hosted a Birds-of-a-Feather event at their networking dinner for #openSUSEAsia.
After a while tho I could see why they call it "birds of a feather": birds really recognize their similars through the feathers.
We as nerds can really recognize each other through our (openSUSE!) Linux-powered Thinkpad.
すごいですね!
、、、