It cluttered up my world map something fierce. I tried this from WowAce a few weeks ago. People can never send you quest objective notes manually, so you don't have to worry about filling up your map with notes if you don't want to. You can ONLY receive quest objective notes if you actually query the guild for them.This will be improved in future versions. Note that currently there is no feedback for when you receive notes they just appear on your map.Simply right click on a note and choose "Delete all notes from this sender forever" You can "ban" a particular player in the same way you can ban a quest from adding notes to your map.This will send over every note for every quest they've ever added to their map. You can also query your guild or party for a complete database dump.If anyone in your guild has notes for any of your quests, they will be sent to you and added to your map. Special note sharing features! You can "query" your guild or party for notes on the quests that you are on.You can simply right click on any of the notes for the quest and choose "Delete all notes for this objective forever" and you will no longer see any notes for that objective. There are some quests that can be completed anywhere and creating notes for them would just pointlessly clutter up the map. Ability to "ban" a quest from creating notes.
Some logic attempts to verify that they didn't get an update for an invalid reason, like someone trading them a quest item.
Party support! If anyone in your party is running any Ace2 mod that embeds Quixote (QuestFu and this mod are two examples) then any notes you have for quests they are on will be shown on the map, even if you have completed the quest already.Your current objective progress is shown on the tooltips of the notes, and it's colored by completeness.Quest objective notes are only shown when they are relevant to you they will only show if you are on the quest and have not completed the particular objective.This helps when trying to pick a location to go to complete a quest: Bigger icons means it's probably a better location to go to. Notes grow in size depending on how many of a particular objective you completed near a location based on how many total are needed.
Note that the icon doesn't always make sense as Blizzard sometimes classifies objectives as "Monster" even though they have nothing to do with killing anything.