I was told if you milled herbs, sold the stack before you looted pigment when shifting herbs around your bags, it bugs the herb out and disconnects you if you try to vendor it. Upon logging in, your character is rolled back to last save point. Thus resetting the daily timer cooldowns.
I did not take advantage of crafting, cooldowns, or try to advance myself in gold profits or ruin the economy or any other player. I reported it as I should have, and I was permanently blanket banned regardless.
Crafting 300 darkmoon decks...sure perma ban them. That's a huge economy exploit. But I did not go that route.
AGAIN...READ BLIZZARDS OWN RULES
We have a top notch Quality Assurance team who work tirelessly to stamp out bugs in the World of Warcraft. However, they face a constant uphill struggle with a game as large and complex as World of Warcraft. Some bugs are minor and do not affect gameplay, but sometimes these bugs can be used to provide an unfair advantage to certain players or to negatively affect the service itself. Factors included in determining an appropriate penalty for knowing exploitation of a bug include:
Whether or not the exploit is performed intentionally, maliciously, and/or repeatedly.
If a player is found to have abused an exploit, they may:
Be given a verbal warning if exploitation is unintentional and no attempt has been made to hide its occurrence. (I actually submitted a bug report AND tweet about it)
Be temporarily suspended from the game.
In extreme cases the account will be closed outright.