Just as the name implies, a wall appears as a high wall on one side of the order book oftentimes x larger than the other. The whole scam works like this: First, an organizer grows their group to an acceptable size 2, seems to be the minimum, based on member-hungry Discord and Telegram posts through promotion and by spamming join links. Antonopoulos aantonop December 16, Some regulation can be a good thing, especially when it protects the average joe. Like most involved in the scam, Spann first heard about the groups through Twitter, but quickly became hooked.