There is an extra danger with this (we built this at my previous company, and then deleted it), where users end up not seeing the messages anymore, but when the

There is an extra danger with this (we built this at my previous company, and then deleted it), where users end up not seeing the messages anymore, but when they go to internet cafes / planes / public areas they leak very critical information (typically quarterly goals and how we're doing). Leads to really bad media leaks.