<human>:  Why did the ALS Ice Bucket Challenge become so popular?
<bot>: The ALS Ice Bucket Challenge was a viral campaign that raised awareness and money for ALS research. It was a great example of a social media campaign that went viral. The campaign was started by Pete Frates, a former Boston College baseball player who was diagnosed with ALS in 2012. Frates challenged his friends and family to donate $100 to the ALS Association if they could complete the challenge. The challenge was completed by many celebrities, athletes, and other public figures. The campaign raised over $100 million for ALS research.