Well, he's pretty much right. Jamba can be configured to announce quest progression and completion and the QuestTracker should show you who has what. You can use the Quest Log Bar to share quests among your team {usually} if you realize someone has missed one. You can also tell Jamba to port your quest updates through different channels and even to your raid alerts or Scrolling Battle Text. Mine currently announces through an area all its own in MSBT. You can also make Jamba either hide a quest from the Tracker once the entire party completes it or show objective progression the entire time.

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There's other quest trackers but none of them do as much as Jamba's Quest bits. I having been using tomQuest2 for ages, but only because it's visually customizable. I still use about 90% of Jamba's quest section because nothing else comes close to the quest management in Jamba.

Learning to double-check the status of slaves is just part of multiboxing. It'll be habit eventually.