Proof that the Internet is evolving: the popularity of pornography is starting to fade. Since the 90s, the reigning reason people were online was the hunt for (cough, cough) adult content.

However, according to yesterday’s Economist, “net communities and chat” are poised to overtake all things blue. Translation: We’re logging on to interact, not indulge.

. . . the proportion of site visits that are pornographic is falling and people are flocking to sites categorised “net communities and chat”—chiefly social-networking sites such as MySpace, Bebo and Facebook. Traffic to such sites is poised to overtake traffic to sex sites in America any day now . . .

Communications common sense says reach audiences where they live. Anybody else just feel mainstream marketing lurch further web-ward?