Stalker is an irssi plugin to correlate information on an IRC network and discover users' previously used nicknames. The concept is fairly straightforward: given a nickname identify previously used hostnames. From those hostnames, extract all nicknames they have used. Repeat until you have identified all nicknames a user might have used. The advantage of this method over the more traditional given a hostname identify all nicknames it has used is that you can identify nicknames across hostmask address Read More... Comments.