Awesome mod. I've been using it for quite some time now... I've actually been using an older version, and just discovered that it was on WoWI and there was an update.
Anyway, I have one suggestion: currently, if the reason someone's on my Badapples list is too long, I can only see the first part in the list. It would be really nice if when I moused over someone with a long reason, a tooltip popped up showing the full reason.
Also, this is probably beyond the scope of Badapples, but what's the likelihood of being able to add entire guilds to the list in the future?