Analysis of the Dallas library system shows that seven and a half percent of all traffic is porn. That's around one out of 15 clicks, which, come on, for Dallas is probably a small number. Maybe those homeless guys have figured out how to use seven proxies so that they can look at boobs on the public computers without setting off any warnings. Not that Dallas has any anti-porn software: the analysis comes because they want to find out if they need to install porn-blocking software. Personally, I say they put a cop on-site, and anyone looking at porn in a way that you can see it over their shoulder gets arrested for public indecency - solves the homeless problem in the library, teaches people that, hey, boobs on the library computer might be a bad thing, and - fuck - get some people to go read some god-damned books rather than wasting their time on the public PCs. If you want to look at porn in public, that's what your internet-enabled cellphone is for.