According to new figures from Nielsen, spending on television advertising for prescription drugs has fallen for four consecutive years.

For years, many advertisers simply set up shop for free on Facebook, displaying their brands to users who "liked" them. But Facebook now hopes to turn many of those advertisers into paying customers, as one business's experience shows.

What can go wrong--and will.

Starcom MediaVest Group and Bluefin Labs projects that by game time 25% of social conversations related to the game will be about ads, compared to 75% about what's happening on the field.

RIM’s new ads feature BlackBerry devices in real-world situations and do a good job of showcasing key features like BBM. What the ads are not, however, is different or memorable.

Best Buy's Super Bowl ad is reminiscent of a famous Apple campaign, while Action Electronics will have a Steve Jobs lookalike touting its new tablet.

Colleen Bee, an OSU assistant professor of marketing, found that ads are viewed more favorably in a suspenseful game than a boring one.

Besides the expected participants in Super Bowl advertising -- car, beer, and soda companies -- this year's hoopla features related pitches from children's book authors and online matchmaking sites.

A new Procter & Gamble co-branding campaign has an Old Spice pitchman interrupt commercials for Charmin and Bounce products.