This headline might be 22% more effective than yours

[youtube https://www.youtube.com/watch?v=M5atebvIuYk&w=620&h=315]

Quickly, from the Buffer blog: back in late May, they ran two variants of the same headline on their blog.

Here's Headline A: "The Simple Test That Increased Our Referrals."

Here's Headline B: "The Simple Test That Increased Our Referrals By 30%."

You'd probably guess that the data-backed hea…