From the April 2009 issue of Entrepreneur

Display ads are so yesterday. Check out these alternative tools for expanding your company's advertising campaigns into new venues.

Who: Google TV Ads
Where:google.com/adwords/tvads
What: Like Google AdWords, but for TV
Why: Using the familiar AdWords interface, you can launch a TV advertising campaign in minutes. You're able to control the networks (including big names like CNBC and the Hallmark Channel) and times that your ads run or have Google automatically generate suggestions based on the demographics you want to reach. You only pay for impressions delivered.
How much: Set your own budget and make bids on airtime

Who: TargetSpot
Where:targetspot.com
What: Ads on internet radio
Why: Internet radio is a huge, under-tapped space. TargetSpot lets you narrow your advertising campaign based on spe-cifics like geography, programming types and time of day. Tools and services are available to help you create an audio ad.
How much: Set your own budget

Who: LinkedIn DirectAds
Where:linkedin.com/directads/
What: Text ads for LinkedIn users
Why: When you're after the professional market, LinkedIn is a great hangout. Ads can be targeted at specific industries, ages, geographic areas and so on. Ads also link back to your own LinkedIn profile.
How much: Starts at $25