Over the course of my 7+ years playing World of Warcraft I've done so many evil things alone or with my friends, that I could list them for hours.
In college I used to leave my fishbot running while I was in class during early cata. When I would get back to my dorm ~3-4 hours later I had like 100 stacks of fish in my bags which I would run back to org and sell for about 80 gold a stack to our rival guild so they could make feasts and buff food. I did this for like 3 weeks or so, until I had effectively crashed the market and a stack of fish became worth under 20g.
Then as soon as I stopped botting the fish market found itself completely dead and prices soared to like 300g a stack because no one was fishing (low pop server), so I decided to start fishing again but then pirox died. From that point until the release of 4.3 fish practically vanished from the auction house because the market went nuts and no one wanted to fish.
In cata I was an officer of the second best guild on our server and we had to do a merger with another guild to keep progressing smoothly. There were basically two guilds to choose from to merge into us, and the one we picked lived, and the one we didn't pick died. Well I had some beef with a few of the guys from the guild we didn't select and not only did the guild die, but many of those hardcore raiders were not accepted into our guild or the other good guild so they either had to join bottom of the barrel guilds or transfer away.
In cata there was this fishing quest item called the thunder lizards tail, that had no cool down and was off the GCD. I found out that if I macro'd it I could have the huge thunder storm effect go off multiple times within a second and it would create a spectacular effect. Then I found out that if I did this while briefly toggling off my internet and spamming it for 5 seconds and then flipping my connection catch up, the storm would go off about a hundred times in a single second. Which meant that if anyone was playing the game on a less than stellar computer their video drivers would likely crash (hell mine did on some of the biggest explosions I put together). In one instance I caused someones computer to blue screen. I got a 24 hour suspension after doing this for several weeks, it took forever for blizz to fix this..
In wrath of the lich king when ICC first released we held a pugs and would master loot all gear we wanted to one of our friends who we told to drop guild during the run and join some random lowbie guild. Then he would fake a disconnect and later trade that piece of gear to the one us that wanted it. That was how we managed to ninja loot without having a PuG fall apart.
In burning crusade we managed to figure out how to use doom lord kazzak's mark of kazzak to kill people in orgrimmar by using a warlock summon, a mage portal and a paladin bubble + lay on hands tag team to repeatedly bomb the auction house and bank. We briefly made a clique guild called car bomb for the week that this worked.
In burning crusade we also figured out a really annoying bug where you could summon pets with macros weirdly that basically made you d/c upon looking at the mass of pets surrounding that person.
I just realized I am kind of an asshole.
edit: Also doing this with the help of another guild
https://www.youtube.com/watch?v=NdCL8j-0oWI wait till about 30 seconds to watch mass murder.
However, I have my account back so can't complain. Now I'm looking for a Scroll of Resurrection if someone has one?
