On the day of Twitter's IPO in 2013, a 9-year-old girl helped ring the bell at the New York Stock Exchange while company founders and top executives stood on the floor below.
The girl—Vivienne Harr—was there because a philanthropic endeavor she started as a lemonade stand had gone viral on the microblogging service and turned into a vocal movement to end child slavery.
Less than two years later, Harr's movement has evolved into an Internet start-up called Stand Technologies. Led by her dad Eric, the San Francisco-based company has opened its mobile app for early sign-ups and just raised its first $2.25 million of funding.
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Given Stand's roots, It's only natural that a good chunk of that money came from some of Twitter's most influential names.
"I said way early on, count me in for whatever you're doing," said Twitter co-founder Biz Stone, who invested in Stand and is serving as chairman.
What Stand is doing is trying to create an easy way for anyone to donate money or raise awareness for the cause of their choice, with just a few taps on their mobile phone.