The document discusses the DotCom Bubble of the late 1990s, when investors poured money into internet startups in the United States and globally. This led to unprecedented growth and valuations for internet companies, even those that had never earned a profit. However, the frenzy was unsustainable, and the bubble eventually burst in 2000, devastating many investors and companies. The impact was felt worldwide as internet-focused economies like Ireland saw booms and busts.