David Martin, Vice President, Primary Research, Nielsen Online

Our recent post about how the majority of people who use Twitter wind up abandoning the service received a lot of great coverage and feedback. We also received a healthy amount of criticism from the Twitter community who were concerned that our study sold Twitter short because it failed to take into account applications and other websites that feed into the Twitter community.
So, as an update, we went beyond just Twitter.com, adding in more than 30 websites and applications that feed into the …

NOTE: See the important update to this story here.
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David Martin, Vice President, Primary Research, Nielsen Online

Oprah embarrassed herself on it with a stuck caps lock. That guy from Punk’d competed with “the most trusted name in news” for audience. A befuddled Jon Stewart shook his fist at it in anger. Let there be no doubt: Twitter has grown exponentially in the past few months with no small thanks to celebrity exposure. People are signing up in droves, and Twitter’s unique audience is up over 100 percent in March. But despite …

Oprah Winfrey starts trends.  When her book club features a book, chances are good that it will be a bestseller.  When she mentions a product on her talk show, millions of viewers will check that product out.
Earlier this month, Oprah discussed healthy living with her regular guest Dr. Mehmet Oz, who presented his “Ultimate Health Checklist,” which included three points about eating:
Know the five ingredients to avoid (high fructose corn syrup, sugar, enriched flour, trans fat, saturated fats)
The healthy foods to add to your diet

Antioxidants (Dr. Oz recommends tomatoes, broccoli, …