If I ran a blacklist and said I am posting a list of people who post to mailing lists with signatures that were greater than 6 lines then I don't see that as a problem. If I ran the same list and just claimed those people on the list were "spammers" or "internet abusers" without explaining that they posted a sig with more than 6 lines and I personally defined that as "abuse" then that is a poorly run list. For instance, http://www.spamhaus.org/consumer/definition/ is not a usable definition to be a standard because it is just a collection of vague, undefined terms. Of course all others who are not system admins, including all courts and judges, are all "clueless" and all legal threats are unfounded and anyone who brings up the issue must be spammer.