Taken from the Suggestions post (because Ana's awesome like that): Seven Deadly Sins/Seven Virtues event!
For the following week, characters who are usually 'good' will be affected by one of the Seven Sins (Lust, Gluttony, Greed, Sloth, Wrath, Envy, Pride). And characters who are usually 'bad' will be affected by one of the virtues (Prudence, Justice, Temperance, Courage/Fortitude, Faith, Hope, Love/Charity).
They will be affected randomly (no candy or whatever to trigger it this time), and there are just a few rules: The shortest amount of time you can be affected by a sin is fifteen minutes. The shortest amount of time you can be affected by a virtue is one hour.
The longest you can be affected by either, is one day. And you can't be affected by two different ones in the same day.
That's pretty much it - you can have your characters be affected by any of the seven virtues or sins in any of the seven days. You can have them be affected just once, or every day, that's up to you.
Hopefully this all makes sense! As usual, feel free to ask any questions!