Business briefs: American Airlines suing Google

American Airlines is suing Google Inc. (GOOG) over the Internet company’s sale of keyword ads for rivals triggered by its own trademarks. American filed a lawsuit in U.S. District Court in Fort Worth, Texas, seeking unspecified damages. A Google visitor who enters certain words or phrases that American trademarked will get links to American’s Web site but also its rivals under “sponsored links.”

Julie Aigner-Clark

The mother who launched the Baby Einstein child video empire by making videos in her basement for her own children says she’s stung by a controversy over whether the videos help babies learn or get in the way — and insists they were never designed to make infants smarter, only happier. Aigner-Clark sold her company to Walt Disney Co. (DIS) five years ago.

Niners shock Packers to advance to NFC Championship Game

Late-game blocked punt turned the game around

The downturn persists: Examiner analysis reveals that S.F.’s economy has a long road to recovery

‘If you don’t keep downtown a vibrant place, it has cascading consequences on all the neighborhoods’