Leplive Euphoria
A Def Leppard list on groups.yahoo.com, for people who are going to various concert dates world wide. Where you can tell your plans, and maybe meet up with other fans going to the same dates.
LepNet
Home of the very first online mailing list, created in 1993.
Leppard Club
Another Def Leppard mailing list on egroups, lusting is allowed.
Sweet Savage
A moderated mailing list for fans of Def Leppard's bass player, Rick Savage.