Now it looks likesomeoneat Facebook is at least a little jealous of Instagrams success.
At least, thats what a new test hitting the Instagram app suggests.
But it shouldnt be surprising.

Mark Zuckerberg has reportedly long been at least a little salty about Instagrams meteoric success.
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It benefits in no way by directing users to Facebook, but Facebook could definitely use the boost.

Quantitatively, Instagram posts typically seemuch higher engagementthan Facebook ones.