Social Media:

• Facebook unveils location-based service.

Mobile Marketing:

• Apple shutting down Quattro to focus exclusively on iAd.

• RIM shops for mobile ad network.

• Mobile ad firms capitalize on iAd delays.

• RIM said to plan crusher tank technology for planned tablet computer.

Convergence:

• How Google TV will make money is still up in the air.

Legal/Regulatory:

• Talks resume on internet traffic in Washington.

Search:

• SEO Sage: Optimization can be cheap but never easy.

Weblog Marketing:

• More marketers start blogging.

Pearls of Wisdom:

• How online retailers can evaluate the ROI of a link building campaign.