can a website owner have same page layout, theme & same url structure based multiple website name?

can a website owner have same page layout, theme & same url structure based multiple website name? Is it a spamming method to get ranking and traffic from the search engines?

I am little bit confused after watching the same content and url structure having following website:
http://ift.tt/1MAqj7u
http://ift.tt/1O4AEfk

from Google API http://ift.tt/1MAxZXp
via IFTTT
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