Guy Phillpson of the Internet Advertising Bureau spoke at The Media Guardian's Changing Media Summit.
He said the IAB doesn't push any one publisher when talking about online advertising. The IAB has large and smaller members, he said.
"We're format agnostic about it. We talk more in terms of disciplines like rich media advertising, not about platforms."
"If there's something [and advertising format] that's proprietorial then a publisher might get mentioned."