As smartphones become more advanced and more common, one has to wonder how much of that viewing may spill over into the mobile world. More important, though, is what that could mean: With on-the-go data speeds already being a , a spike in heavy adult-oriented downloads just might convince carriers to consider some kind of mobile bandwidth caps in the future.

Sound far-fetched? Keep reading.

The Cellular Porn Strain

Japan, as we all know, tends to be a bit ahead of us when it comes to technological advances. Mobile Internet use is no exception, either: With a two-year jumpstart in the world of high-speed mobile access, , Japanese customers are now using the Internet from their phones three times as much as we are.

So where does the porn come into play? It's simple: Where you have video viewing, you have pornography seeking. Japan's largest carriers are reportedly finding that the hunger for porn is starting to cause a serious strain on their networks -- and, as such, they're starting to impose caps on the users who transfer the most data.