Censor Homepage in user profile???

[simalert]

Does anyone know a way to censor people's homepages on the profil page of vBulletin?

I allow my users to use this field, but some of them are abusing it from time to time listing sites I don't permit.

I would like to have that homepage field use the same censor list as the posts or at least have the option to censor certain words from the homepage field.

I'm on version 3.5.3

Thanks