Porn and Transportation are Substitutes

OK, I couldn't leave this one alone. Greg Mankiw points to some research showing that "many websites focused on adult or erotic material have experienced an upswing in sales in the recent weeks" since the stimulus checks were mailed out. I can buy the theory that many of their marginal customers are liquidity constrained, which I'm guessing is the way Greg sees it, but there's another issue here that hasn't been addressed. The stimulus checks are only one of a number of things that have happened over the past few months. You might also have noticed, for example, a dramatic increase in the price of gasoline, coming at a time when people were already adjusting to dramatic increases over the past 4 years. I think that particular change is an important part of the picture.

"Adult or erotic material" is a form of entertainment, or, if you will, recreation. But unlike various other forms of entertainment and recreation, it can be consumed at home. And I suspect that a lot of people think it's more fun than most other forms of entertainment and recreation that can be consumed at home. You can go out to a bar or a club or a ball game or a movie or a show or the beach or, well, a brothel, if you're in Nevada, or you can stay home and consume forms of entertainment that can be consumed at home. I can remember seeing a story recently (I don't remember where) about how brothels in Nevada are being hit hard by the economic slowdown. If you stay home, you don't have to use up gasoline, so the relative cost of at-home entertainment goes down when the price of gasoline goes up. Adult Web sites are probably not a Giffen good, so, if we could hold other income constant, we should expect that the demand for adult Web sites should go up when the price of gasoline goes up.

Granted, other income isn't constant. The rising price of gasoline affects a lot of other areas besides entertainment and recreation, so it represents a general decline in real income. And the economy is weak. So maybe the stimulus checks compensate for these declines in income. If the effect of the stimulus checks is to bring income up to the level that it was before the increase in gasoline prices, we should expect an increase in demand for adult Web sites. So the stimulus checks matter, but it isn't just the stimulus checks.

I should give credit where credit is due. The basic substance of this idea about gas prices and porn comes from this YouTube video:



Not coincidentally, the woman in the video (Isobel Wren, whom you may remember from an earlier post on this blog) has her own Web site "focused on adult or erotic material." And in the interest of smoothing the transition to a less energy-intensive economy, or maybe just to be naughty, I'll give you the link again. (Note that it is an adult Web site, so don't click the link unless you're over 18 and your boss isn't watching.)


UPDATE: I just noticed that this video is the same one that I linked to in the earlier post. Oh, well, now you get to watch it in embedded form.