Mobile Computing:

• The PlayBook is killing RIM.

• 5 moves Microsoft must make in 2012.

• Amazon selling a million Kindles per week.

Mobile Marketing:

• WiFi ad network another option for mobile marketers.

Pearls of Wisdom:

• Social signals and search: what is the impact?

Security:

• LAPD bails on Google Apps because of security & privacy concerns.

Business Strategies:

• Made in Texas: Apple's A5 iPhone chip.

Finance:

• Marketing firm MediaBrix raises $4 million in a second funding round.

Research & Stats:

• Gamers spending more time streaming video to their consoles, Nielsen finds.

Legal/Regulatory:

• The nightmarish SOPA hearings.