Measurement & Analytics:

• Waiting for the new federal government cookie policy.

Online Ad Industry:

• M-Commerce to outpace mobile advertising.

Search:

• Display ads engagement boosts search, says study.

Social Media:

• If cost per check-in was a reality, Foursquare would be $40 million richer.

• Social networking starting to click for businesses.

• Overreliance on social media will damage your brand.

• 8 tips for a successful social media cause campaign.

Agencies and Ad Departments:

• WPP wants close probe of Google's Admob buy.

Legal/Regulatory:

• Florida DA fines online ad company $2.9 million.

Smartphones:

• Android elbows iPhone out of second place in US market.

Security:

• Twitter fixes 'follower' bug, resets accounts to zero.

Privacy:

• Facebook bolsters D.C. presence as privacy debate heats up.

Mobile Computing:

• Five reasons HP "Hurricane" can compete with the iPad.