Instagram may be great for some brands, but not a fit for others, as its audience is largely young and female. Over 90 percent of the 150 million people on Instagram are under the age of 35. And of Instagram's 150 million monthly active users, more than 60 percent live outside of the United States.
Omnicom and Instagram must also be careful not to oversaturate the audience with ads or the audience will flee. On a site that is largely based on photo sharing, with no firm editorial context, it will be a challenge to ensure the ads fit into the context of the user’s feed and be relevant. Even if it is beautiful and not disruptive, if it is not providing value, it will not be effective.