Campaign:

• Volkswagen gets punchy on Facebook for Super Bowl.

• Brand.net spreads into video with 'I Can't Believe It's Not Butter' campaign.

Ad Pricing Trends:

• Ad revs improve, but company stock prices don't.

• Perceived value of ad nets surge, surpassing major portals.

Analytics:

• Goals and engagement metrics for Google Analytics.

Email Marketing:

• A primer on email subject line testing.

• Do open rates really matter?

Media:

• AP, Yahoo strike content deal; AP, Google still talking.

Mobile Computing:

• Firefox for mobile hits production mode.

Social Media:

• NASA streams video from space station.

• Google now indexes 620 million Facebook groups.

• Building a social network in a Facebook and Twitter world.

Politics:

• Why Obama is selling his budget on YouTube.

Security:

• Network attacks on Facebook, Twitter tripled in 2009.