Late response incoming..
zak123, if you didn't create the script, or contribute a certain amount to it, then you've got to give credit to the person; if you don't have the exact link to the comment, then at least mention the person's name. :/
I meant to respond to: Not only does it kick for url link, it also kicks for channel spam...because of the \43[a-zA-Z]
So basically what this does, is devoice anyone that joins your ustream chat that isn't a auto-op, or you. The reason this is necessary and you should use it, is because ustreams bot auto voices people, and if you want to +m the chat, they can still talk, if you have this script however, they will not be able to talk during +m's.