The latest WSJ "Middle Seat" column even refers readers to Flyertalk:
Wall Street Journal - "The Middle Seat":
The Airport-Security Guessing Game
Updated October 31, 2012, 8:17 p.m. ET
Here is a short quote, to give an idea of the article's tone:
For the past decade, travelers have learned to adapt to a changing array of security requirements—shoes off, liquids restricted, bodies scanned and patted down. Frequent fliers try to adjust, knowing that following a routine makes navigating airports quicker and less stressful.
Know Your Airport Security Rules
And yet the Transportation Security Administration has consistently been inconsistent.
And here's the reference to FT:
FlyerTalk.com, an online community for travelers, has posts with instructions to decode boarding passes so travelers who have experienced problems in the past will know in advance whether they will get PreCheck screening or be sent to regular lanes.