Interferring (sp) with another user or users
 - on this system or
 - on another system
Spamming of any sort
Illegal activites that actively involve SDF
 - using SDF to run crack (?)
 - using SDF for guessing passwords
 - using SDF for trading copyrighted work
 - portflooding
 - irc bots
 - unattended bot-like processes
 - encryption cracking
 - unauthorised connections to remote hosts
 - any sort of scam
Lifetime ARPA membership is based on the lifetime of SDF