Chris Clark became a multi-millionaire just for forking over $20 a year to keep the pizza.com domain name he registered in 1994. The 43 year old resident of North Potomac, MA, bought the domain name with the goal of getting consulting contracts, but he also made money with the site via advertising.In January, Mr Clark decided to sell it after hearing that another domain – Vodka.com – was sold for $3m in 2006.”I thought, ‘Why don’t I just try to see what the level of interest is?’Mr Clark said.”If someone’s willing