And perhaps I should add a "why" - the universe of web properties that can convert is limited. They typically have a small audience, so the real spend for any s

And perhaps I should add a "why" - the universe of web properties that can convert is limited. They typically have a small audience, so the real spend for any specific brand that will really convert into actual $$ sales is limited. I'm guessing that its around the $1m mark. I could be wrong by an order of magnitude, and probably not much more.