While online video advertising spending will increase by nearly 40 percent this year, the big opportunity for marketers is to create "useful" content, says Geoff Ramsey, CEO and co-founder of eMarketer.

In this interview with Beet.TV, he states: "Marketers need to be in the content business."

We spoke with him about the opportunities and challenges around online video content creation in our studio yesterday. 

Ramsey has co-authored a just-published marketing book titled Digital Impact: Two Secrets to Online Marketing Success. Several chapters address online video. 

His co-author is Vipin Mayar, EVP/Global Director of Marketing Performances, at McCann Worldwide. We will publish our interview with him next week.

Andy Plesser