I'm surprised he's only paying $7000 to put up a massive billboard next to a major consumer route for a month. I'm sure billboard advertising doesn't have great conversion rates, but I still imagined that would cost more.
Anyone care to comment on their experiences with billboard ads?
I think the return on investment probably needs to (and intends to) include the public relations events (like the Wired article) created, as well as direct conversion rates.
It's entirely possible DDG / Gabriel will have more new users from that article than from a month of the billboard, but of course the article wouldn't have been written if he hadn't done something novel like old-school advertising a new-school product.
Anyone care to comment on their experiences with billboard ads?