The Ticker: Promoted trends; Cyberattacks & PR; Palin’s emails; Mystery of the Wikifixer; Nissan

AllTwitterKer-Ching! A Promoted Trend On Twitter Now Costs $120,000 A Day

MediaPostPR Departments Need To Step Into Security Breaches

Poynter / RomeneskoHow WP, AP, NYT plan to handle the Palin emails

The IndependentMystery of the Wikifixer: who is the secret image-cleansing agent?  Someone has been cleaning up Wikipedia entries for the rich and powerful

Financial TimesNissan’s PR mimics the newsroom