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Luke Welling is a software engineer and regularly speaks on open source and web development topics at conferences such as OSCON, ZendCon, MySQLUC, PHPCon, OSDC, and LinuxTag. He has worked for OmniTI, for the web analytics company Hitwise.com, at the database vendor MySQL AB, and as an independent consultant at Tangled Web Design. He has taught computer science at RMIT University in Melbourne, Australia, and holds a Bachelor of Applied Science (Computer Science) degree.