BusinessWeek asks: How much is MySQL worth? MySQL, a fast-growing maker of database software used by some of the Internet's most recognized brands, is preparing to file for an initial public offering, perhaps as soon as late 2007. The offering could value the company at between $600 million and $1 billion, according to sources, and inject some pep into a tech IPO market that's seen only a handful of successful o BusinessWeek asks: How much is MySQL worth? MySQL, a fast-growing maker of database software used by some of the Internet’s most recognized brands, is preparing to file for an initial public offering, perhaps as soon as late 2007. The offering could value the company at between $600 million and $1 billion, according to sources, and inject some pep into a tech IPO market that’s seen only a handful of successful offerings in the past year. Open Source