It’s here, though there’s only one post in the tag, along with a Burn Notice quote that sums torture up rather succinctly. For rather obvious reasons, it’s not a topic we’re particularly eager to deal with.
The two good contemporary resources on the subject I can point to are Taxi to the Dark Side (2007), and Fear up Harsh by Tony Lagouranis.
On a lighter note, there’s also an Interrogation tag, though, I don’t think that’s what you’re looking for.
-Starke