Other World Computing (OWC) today announced the availability of free Exhibit Hall Guest Passes for Macworld Conference & Expo 2007 through its e-commerce portal. Hosted by Other World Computing as a free download, the complimentary Macworld Conference & Expo admission passes (valued at US$45 each) are offered in appreciation to the Mac community for making OWC the premier choice for Mac and iPod upgrades and accessories, notes the company.