Social media played a key role in the Arab Spring uprisings by allowing information and protests to spread rapidly. The traditional model of media controlled by authoritarian leaders was disrupted as social media gave citizens a way to instantly share news, comments, and help organize events. This helped accelerate the "domino effect" as protests and acts of self-immolation were publicized, inspiring more demonstrations across other countries in the region. An estimated 40 million people in the Arab world were using the internet by 2009, with millions on Facebook, highlighting social media's potential to facilitate grassroots organization during the uprisings.