Entrepreneurs Jake Winebaum and Sky Dayton were widely mocked for lavishing US$7.5 million on a single domain name -- business.com -- back in 1999. It was the single highest price paid for a domain name at the time. Now look who is having the last laugh. The company that grew out of business.com -- a search engine used by businesses to find products and services -- is now on the auction block, and could fetch anywhere between $300 million and $400 million, according to people familiar with the matter. imbunatatire site