What Joel Osteen learned about social media from Hurricane Harvey

Thank heaven for social media. That sentiment was definitely on the minds of many people caught in the path of Hurricane Harvey, which is shaping up to be one of the worst disasters in U.S. history. It dumped 24.5 trillion gallons of water on Texas -- enough to cover the entire state of Arizona in a foot of water. More than 32,000 people were displaced and forced to go to shelters. The official death toll stands at 46 (at the time of the podcast it was 35). That last number might have been higher if not for social media. In the early hours of the hurricane, 911 systems were overwhelmed, and many people reported not being able to get through to emergency services at all. With the water level rising and no help coming, lots of people turned to social media to plea for rescue. Public figures felt the power of social media in the wake of the disaster, too. Popular Houston-based televangelist Joel Osteen was forced to respond when Twitter stirred up criticism that his massive Lakewood Church stood nearly empty while shelters in the area were filling up. First Lady Melania Trump was a target, too, over her choice of footwear, although the backlash to that criticism was just as swift. On this week's MashTalk, we talk to Houston resident and Ringer staff writer Shea Serrano, who became one of the most prolific "signal boosters" on Twitter for people affected by the storm, and Bill Moore, CEO of Zello, whose "live conversations" app was instrumental in enabling people to communicate directly when regular methods weren't working. Some key stats:

Twitter saw more than 27 million tweets related to Harvey, making it the second most-tweeted event in 2017 (the Super Bowl saw 27.6 million).

Facebook saw more than 1,000 users made requests for help via Safety Check, with more than 3,500 offers from volunteers seeking to help those affected.

Follow MashTalk on Twitter.