Labor shortages in larger airports have rendered security lines so unpredictable that people are missing flights. Clark explains how TSA PreCheck, Global Entry & Clear work, and how to get these services for free or discounted. Also – Clark discusses fake positive reviews and the recent Amazon crackdown. A new twist: Negative reviews used to extort merchants. Understand how much the review system is gamed for retailers, restaurants & hotels, and how to best use reviews.