If half the people of (your?) chat servers have bad words in their whois, and you have no problem with it, then you do not need a script.
If that isn't obvious, ofcourse. :)

The scope of this script is far beyond bad/swear words in whois.
You want to know more about the people visiting your channels?
You want to know on which other channels they are, maybe to visit them too?
Your channel is pestered by a bunch lamers and they all seem to be on a certain channel (whatever it is named, bad/swear words or not)?
You want to keep track of all people that are op on other channels?

This script is essentially nothing more than a versatile filter that automatically grabs on request-available data for you, filters it according to your information needs, and can act, if desired. It gives you a much higher awareness of the people on your channels. And that is its purpose. 'Check' Channels.