What do people pouring buckets of ice water over themselves have to do with "strike out ALS"

[Mom of Scooby]

There are videos of people all over my and Instagram doing this with a hashtag #strikeoutals. Are people donating money for this? These are the things I wonder about... Yeah I guess it gets the word out, but what does it really do..

It's like that thing a few years ago where everyone posted the color of their bra for breast cancer... Or moustshce "movember" for prostate cancer

[Mom of Scooby]

Oops didn't mean to post this in running!