It's only considered evil if it doesn't also produce dial-up noises.

But since op didn't clarify, let's just assume evil.

eh, when the landlord moved a business into their house and expected me to keep providing IT for free, but also for the business: I rate limited them to 5kbps. just enough to say it has internet, not fast enough to use the internet without timing out on every page. I got paid the next day.