Core Insights - X platform has launched a "premium username trading market" for Premium Plus and Premium Business subscribers, allowing them to acquire long-unused usernames for a fee, which has garnered significant attention [1] Group 1: Username Categories - The new username offerings are divided into two categories: "Priority Handles," which are free and include common formats like real names and alphanumeric combinations, and "Rare Handles," which require payment starting at $2,500 and can exceed $1 million based on rarity and market demand [2] Group 2: Subscription Model and Rules - The username service is not a one-time purchase but part of a subscription model aimed at retaining users. Once a new username is acquired, the original username is frozen to prevent others from claiming it [2] - If a user cancels their subscription or downgrades their membership, they will lose the acquired username, reverting to their original username, and any purchased rare usernames will be reclaimed by the platform [2]