What are the darker aspects of the fey and the lands of Faerie? Throughout history, and in fables such as Grimm's Fairy Tales, the fey are not very much like Tinkerbell™ at all.
They dominate people, steal/exchange babies, make people dance until they die of exhaustion.
What else are they known for?
What are some good sources of fey stories--gaming books and others?
Just noticed the next post, because I was going to google-fu Ravencrowking's threads (but now I know they are deleted).
One thing RCK mentioned in his threads is that faerie food (fruit, etc.) is addictive to humans, yet provides no nutritional value whatsoever. Once you eat faerie food, you won't desire human food ever again (treat this like a drug, make a daily Con check, if you fail, you refuse to eat normal food seeking only faerie food.) Of course, eating faerie food leads to starvation and death.
Faeries, despite being 'chaotic', have strict rules of politeness that they expect when humans deal with them. If you lie, steal or cheat from them, insult them, treat them harshly - they will punish you. Its OK for faeries to trick you, because that's what they do, but if humans do that to them, you will be sorry...
One of the best sources for faerie lore is Katherine Briggs, An Encyclopedia of Fairys, Hobgoblins, Brownies and Other Supernatural Creatures.