I was at a restaurant the other night, and needed to use the restroom. As I was doing so, I could not help but notice that there was an ad in the restroom (for neither the restaurant nor its restroom services). That was a little offputting by itself, but moreso was it’s location: the bottom of the urinal.

Upon further checking (advertising research, not checking bathrooms), it appears this is quite the growth location for advertising — some entrepreneur has even come up with “interactive” urinal advertising. My, oh my.

It got me thinking (no pun intended) about advertising saturation. There has, for many years, been an evolving science of determining when one’s ads have reached as many people as they’re going to. This is the point, it’s theorized, that you can stop spending money on that campaign — to do more reaps diminishing returns.

But what about the saturation to the viewer? It is increasingly difficult to go through a day (let alone a few hours) without seeing ads. Surely this overload of messaging dilutes its effectiveness.

This comes up with our clients regularly. When working on commercial sites that wish to advertise their own wares, or publishing platforms that feature the advertising of sponsors, there are always conversations about placement, frequency, and the balance of content vs. ads. The initial tendency is often to create as many ad placement opportunities as possible — to really “get the message out.”

In our usability and interface testing, though, we find that there is a balance point, after which additional branding and marketing messages simply aren’t seen, and by that time, the effectiveness of the ones that are seen is also diminished. While we haven’t studied the results of our testing over the years, my guess is that the balance point has shifted over the years, as viewers get both more sophisticated and more tired of seeing wall-to-wall selling.

It’s a reinforcement for doing user testing, to be sure. But it’s also an incentive to look at more integrative ways to communicate advertising — and more restrained ways of papering it across the Internet!