Quote from: anarcho47 on April 29, 2012, 01:33 amVendors should be deleting addresses as soon as shipped. If you printed off for some sort of packing sheet, burn the fucker the second the last pack hits the last envelope. Done.The only thing I keep i a list of usernames for buyers who I will never ever do business with, mostly gathered via the forum posts on suspicious buyers, PMs with morons, and the odd horrible son of a bitch (and I could recite all of those off the top of my head) who has actually done business with me.Yes, and you could use a hashing function for addresses (shouldn't count white-space or distinguish between upper/lowercase). A small script can do that rather neatly.This way, you have a spreadsheet of IDs, and a counter that increments for each ID when it reoccurs.e.g.asdf234dfe453efe      123adsfw43533fda      5aaqwergwerwera      00 could be an address, username or country on your black-list. Or you could use negative numbers for different meanings.You can keep your promise to SR and it's clients, because every address is transmorphed into an ID.If LE pick up the spreadsheet, even if they know what they have, they have to know how to reverse the hashes, and even when knowing what function you used, this is an extremely non-trivial exercise. Plus, you can't really help them even if you wanted to, since you can't reverse the hash either.I think this is a pretty much watertight method of keeping statistics, without, ah, keeping LE relevant information. Anybody see any holes?