As Dan pointed out, reviewers provide the domain name in order for us to verify whether the site is indeed hosted with the provider. Doesn't mean you were not a customer. A review is just that - an honest opinion of a service provider.

Due to turnover of customers within the industry, I bet there are many reviews that were posted over the years that today won't point to their respective providers. And that also doesn't mean the review wasn't reflective of a provider at the time either.

Not sure if I am making sense, been studying for the exam all day...