Mobile Computing:

• Nokia aims software at low-end phones.

• "Mango" arrives with a Wi-Fi tethering surprise.

Legal/Regulatory:

• DOJ to take closer look at Google's Motorola deal.

Business Strategies:

• Google in talks to acquire Katango, sources say.

• Yahoo presses on with new products.

Social Media:

• Twitter ad sales to triple in '11.Facebook's changes present opportunities for brands.

• Did Facebook just change social networking forever?

Publishing:

• News Corp.’s ’Daily’ with 120,000 readers trails Murdoch goal.

Pearls of Wisdom:

• Ramping up your holiday PPC advertising.