F.O.S.I. sites were notoriously ephemeral. Because they hosted serial keys and cracked executables, they were constant targets for the BSA (Business Software Alliance). A site might be "live" on Monday and "404 Not Found" by Tuesday. This led to the "Mirror" culture, where webmasters would keep a list of hidden links and IP addresses to redirect their community whenever a host shut them down. 4. The Legacy of the Scene