Failbook is an addon designed to keep a quick record of players you have had bad experiences with in raids or groups.
It lets you save player names with a note, and when one of those players joins your group or raid again, the addon warns you with a message so you can keep it in mind.
You can also sync your list between your characters, so you do not have to write the same information again on each one.
Quick start:
Open the addon.
Type the player’s name.
Add a note with the reason and save it.
If that player joins your group or raid again, you will receive an alert.
If you want to share your list between your characters, add your other characters in Sync targets and accept the sync the first time.
Normal entries last 30 days.
After that, they disappear from the active list and stop triggering alerts, but if that player signs up again, the addon lets you choose another 30 days or mark them as permanent.
The addon is meant to be simple, fast, and easy to use, the command to show the ui is /fb