Well it’s hard to say. Their sampling is pretty good, although mostly reflects the white population here as they discuss.

We don’t really have better stats than self reports, and this is a good study of self reports. You could dive into the data to see exactly what are the major areas, they’re probably not assault and more likely to be pornography.

Keep in mind it’s not uniform, the wierdos and freaks are amusingly less likely to. It’s more likely to be the well dressed guy with a family. So social elites. Depending on your crowd you might be pretty unlikely to know someone who does this.