I think you may be speaking of WhoIsGuard and not whoisgurd.
There are plenty of better spam guards available. In fact, when you get VPS hosting at most hosting providers, you get both CPanel and WHM. Both have spam guards available built in. All you need to do is activate them and set them up. Easy to implement. In addition, Askimet will serve as an additional deterrent on your site(s).
Attention: "role based name" email prefixes such as support, webmaster, info, contact, forum, service, affiliate, admin, traffic, partners, marketing, etc., for our member accounts are not permitted. They are acceptable for a vendor listing, but not for the member email. This is due to bulk email processors scrubbing them for delivery due to extremely high bounce rates. Please apply for membership using a personalized email prefix. Something like firstname.lastname@example.org.
If we discover you signed up with a role based name we will give you only one message to change it. After 3 days your account will be removed if the email is not changed.