Seven Things You Will Learn in This Week’s Issue of PR News

1. Since its public offering in May, Facebook’s stock has fallen to about $20, or half of the IPO price. (p. 1)

2. Nearly 40% of marketing execs find social media measurement and ROI to be among their biggest challenges. (p. 1)

3. Meat snacks—which includes jerky—is a $1.9 billion category within the $26.5 billion world of salty snacks. (p. 4)

4. Mosaic artist Jason Mecier created a portrait of Jerry Seinfeld crafted with the comedian’s favorite cereals. (p. 5)

5. On average, Fortune 100 companies have 10 corporate Twitter accounts each. (p. 6)

6. The HIPPO method is PR measurement based on the Highest Paid Person’s Objectives. (p. 7)

7. In formatting sites for the mobile Web, beware of using Flash, which doesn’t run on iPhones or iPads.