Top interactive agencies and affiliates share their tricks for picking the right ad network.

Conservatively estimated, there are upwards of 400 ad networks globally. There is a Japanese iPhone-only ad network and the recently launched Village Voice alternative weekly New York newspaper ad network – and everything in between. For ad agencies representing top brands, and for affiliates trying to make a living in the increasingly competitive world of performance marketing, picking the right one is critical to survival. Choosing poorly spells disaster for everyone.

As we all know, the performance marketing industry is growing rapidly. Due to economic conditions, more marketers are moving online and more online marketers are using the pay-for-results model to deliver the results they seek. Add to the mix the rapid pace of technological innovation and the desire for more brands and agencies to sink their teeth into our industry and it’s easy to see we are at a major inflection point for performance marketing. In order to seize the opportunity, we have to take a step back and examine the role that trust and integrity play in our future success.

Drew Ianni spends most of his time talking to the biggest names in performance marketing about the biggest trends.

So, what’s his take on it all?

Anyone who’s ever thrown a big party has known that nervous moment when you wonder: what if nobody shows up.

His speech is peppered with "awesome" and "ready to rock and roll," as if he were fresh out of high school. He's only 32 but he feels luck has a lot to do with his good fortune. He took what was basically an idea to sell jam and turned it into a successful online marketing company.

It's been seven years since interactive agency Razorfish embarrassed itself on national television. When reporter Mike Wallace of CBS' "60 Minutes" asked the agency's co-founders what the company does, the answer was none too clear.

Noah Elkin is the director of industry relations at iCrossing, which was recently named Best Search Agency of 2005 by industry trade publication OMMA. iCrossing, started more than nine years ago in Scottsdale, Ariz., is jumping into new arenas, such as the mobile search market, and expanding client services to include content creation and website design.

Traditional Madison Avenue advertising agencies have taken their share of lumps lately. More companies are spending bigger bucks to advertise online than ever before. Overall spending on advertising is expected to reach $279 billion this year.

That's a 5.4 percent jump over 2004. However, Internet advertising is forecast to grow 15 percent over last year and hit nearly $8 billion by the end of the year.

The trend has been building for years, but now many traditional ad agencies are scrambling to change or be left behind.