Inside the origins of Trump's high-octane Twitter account

WASHINGTON (AP) — Peter Costanzo is the man who helped turn Donald Trump into @RealDonaldTrump.

That, of course, is Trump's Twitter account — a centerpiece of the presumptive Republican nominee's presidential campaign and his vehicle of choice for pumping out political attacks and self-promotion to more than 8 million followers. But the billionaire's foray into the world of social media began with a much simpler purpose, yet one that's still distinctively Trump: making money.

Costanzo crossed paths with Trump in 2009 when he was working as an online marketing director for the publishing company putting out the businessman's book "Think Like a Champion." Twitter was still in its infancy but Costanzo saw it as a new tool that the real estate mogul could use to boost sales. And Trump agreed.