How to hack it? The Association for Corporate Growth Chapter Challenge is an annual competition that rewards chapter leaders who effectively use social media, including chapter Twitter and LinkedIn accounts, to promote ACG’s annual conference, InterGrowth.

Why does it work? Chapter leaders who complete the challenge—by making 12 or more social posts in the five months before InterGrowth—receive two complimentary registrations. And the three chapters with the most members in attendance receive gift cards and baskets.

“These are incentives that many of our chapter leaders will take advantage of,” says ACG Chapters and Membership Manager Claire Alston. “We also give our leaders a checklist to track their progress to the goal.” The challenge generates plenty of engagement—this year, 51 of 58 chapters participated.

What’s the bonus? The challenge not only promotes conference registration, but it also incentivizes chapter leaders to meet face to face. “As part of the challenge, leaders agree to attend the chapter leader meeting at our annual conference,” Alston says. “It’s time for them to talk strategy and challenges.”

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