AS PORN GOES, SO GO THE REST OF THE MEDIA, which may be worrisome to some:

The Internet was supposed to be a tremendous boon for the pornography industry, creating a global market of images and videos accessible from the privacy of a home computer. For a time it worked, with wider distribution and social acceptance driving a steady increase in sales.

ut now the established pornography business is in decline — and the Internet is being held responsible.

The online availability of free or low-cost photos and videos has begun to take a fierce toll on sales of X-rated DVDs. Inexpensive digital technology has paved the way for aspiring amateur pornographers, who are flooding the market, while everyone in the industry is giving away more material to lure paying customers.

And unlike consumers looking for music and other media, viewers of pornography do not seem to mind giving up brand-name producers and performers for anonymous ones, or a well-lighted movie set for a ratty couch at an amateur videographer’s house.

Other media folks, beware!