If you are providing Quality and reliable hosting, you doesn't want to worry about anything. Also you can ask your customers to have there own reviews as open so that everyone in this business should know what you are providing!
I had a customer recommend a new customer of her's every month for about three years. It was a good relationship. :-P I no longer work for that company though, that has affected her sending new sales to them. :-(
Vice President of Sales and Marketing
Word of mouth is good Yes! Advertising is still vital... No one I knew hosted anything, so relying on reviews adverts etc was the only way forward. It is hit and miss, but you eventually find the right host or become it!
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