Used in internet slang, “going crazy online” describes:
One of the most common associations with the term is the world of liquidation and flash sales. Various platforms operating under names similar to "Crazy Online" have carved out a niche in the e-commerce world. Unlike the sterile, predictable aisles of major retailers, these platforms offer a "treasure hunt" experience. crazyonline
The original official servers for most regional versions (e.g., CrazyOnline by Yetime / G4Box) have shut down. However: Used in internet slang, “going crazy online” describes:
While the pop culture account is currently the most active, the name has been used in different contexts over the years: Used in internet slang