Pkilling

A sense of retribution.

To all those out there that have been Pkilled more than once by either a Ghost character or a hacker utilizing soft-ice try this technique: if you happen to be in a game where you are adventuring in the dungeons, caves, catacombs, or hell for that matter carry scrolls of both Town-Portal and Infravision. If a Ghost enters your game (Who is level 0) immediately cast infravision. Notice an area inhabited by creatures. Use Town-Portal and position it within the vicinity of the horde. If the P-killer is arrogant enough, he should be lured to enter the portal. Once he materializes on the other side...he's (to quote), "a sitting duck." Once when I did this The ghost lost all of his equipment. I received a unique "DreamFlange" amulet and sword. Trust me, this technique is quite amusing and it may let others think twice about messing with you again. - RJ
Ghost-spotting tips
By now, you've all probably encountered ghosts, people who've name-blanked themselves and set their level to zero so that they're invisible. Until Blizzard come up with Yet Another Patch to address this behaviour, here are some simple ways to spot ghosts:

1) You're in town, and you keep seeing "has cast an illegal spell" messages. For some reason, most ghosts can't deal with the fact that their old TownKill patch doesn't work anymore, and will repeatedly try until they run out of mana. Taunt the ghost repeatedly. Don't try duping or exchanging equipment; ghosts seem to love stealing. Entering the dungeon will lead you to:

2) Your mana (if you're mana-shielded) or health drops for no apparent reason. You can't hear a weapon or spell, but you're being injured with nothing in sight. Foo's advice is to leave the game with all due haste.

3) You create a game, play for a while, and suddenly you get lagged as if a slow player has connected, but you can't see them. Right on both points. Time for another game. Passworded.

It sucks that BattleNet has come to this; we have to play defensively because there's such a large population of obvious cheaters who, bored because the game itself is too easy after they hack their character and collect the usual hacked/duped items, prop up their self-esteem by picking on others. They're not brave enough to do it normally, though; they have to hide behind invisibility. Pathetic. - foo

Getting killed but keeping all of your stuff
A good way to avoid getting PKed or even just losing your stuff when dying is ALT-F4. Yes, that wonderful little keystroke to close a Windows program. (also reported to be the way to the Secret Cow Level by Robbers). Even as you're screaming, by hitting ALT-F4, the game closes, without saving your dead character. Quite a nice tactic against those nasty PKs, if I do say so myself. - Mist
How to kill pesky PKs and other annoying people
you can get rid of PKs by going down to level 16, this may take a little effort, but it will be worth it, find Diablo's lair, but don't open it, instead, open a portal into his lair...and lure the PK into the portal...Diablo and his fellow blood knights will do all the work for you. Also if you happen to see a person with a whole ton of hit points, say like 30,000,000 use bone spirit, that would take a big chunk out of his life pretty qiuck. - Lord_of_Doom
Avoid getting PK'd: Let the other player go first
A new PK technique (two people tried it on me) that mages/rogues use is to let you go first, then wait until you're busy fighting monsters before they let fly with fireballs/arrows. If they time it right, they'll help the monsters kill you--so your gear gets dumped on the ground when you die. To avoid this situation, always let unfamiliar players go first. Wait a while, until you know you can trust them, before you begin to go first. You may miss out on a few cool items in the ear