Ad Pricing:

• Social media sinks online ad pricing.

Social Media:

• Can the Foursquare keep up with marketers' demand?

• Gowalla - we're still in the location race.

Publishing:

• Turner chases ESPN with new web game face.

Search:

• Google says Apple, Facebook not a threat to search dominance.

Mobile Marketing:

• Google, Apple gird for mobile ad display feast.

• Warner Bros., Verizon link for 'Inception' marketing stunt.

Media Convergence:

• Apple TV to stream 99 cent TV shows, sources say.

Gaming:

• Google invests more than $100 million in Zynga, preparing to launch Google games.

Biz Buzz:

• MySpace not for sale, says News Corp.

Security:

• Phony Twitter profiles aim to outwit spammers.

Agencies & Ad Departments:

• UM, MRM win Wells Fargo digital account.

Ad Accounts:

• Samsung running ads on six Conde Nast magazine web sites.