I follow the team at thrive theme, they come out will some great products. They just released a new wordpress plugin today called Headline Optimizer (Headline Optimizer | Thrive Theme)

In their sales video they talk about growth hacking based off finding the best headline because this will get you more social shares and click-throughs.

Just curious if anyone has ever used A/B testing with optimizing their headlines for pages and blog posts and if this has worked for growth hacking.

Thanks in advance for any feedback.