All you have to do is review your web host at:
You must submit a valid URL in the "Domain Hosted" field. This is the site that was or is hosted by the company you are reviewing. To keep this private, check the box Hide domain name from public? - and your domain will be kept completely confidential and private. This means that no visitor (or web host) will ever see or have access to this information. So don't worry about being completely honest in your review.
You may not review free providers like Geocities, Angelfire, Lycos, FortuneCity, etc. nor ISPs like Rogers and Bell. You may only do this if you actually have your own domain name and the domain is not a subdomain or extension of theirs.
Once you have done this, PM me with the name you submitted, your host, and your PayPal email address.