Microsoft Corp. on Tuesday plans to announce a new sweepstakes with a $100,000 grand prize for U.S. beta testers of its free Web-based document storage and collaboration service called Office Live Workspace, IDG News Service reports. The company also announced that it has added several new features to Office Live Workspace, a service designed for individual users and small businesses that Microsoft describes as an "online extension" of its Office suite. As part of the sweepstakes, Microsoft will award a total of 30,000 prizes through May 11. Prizes other than the grand $100,000 prize include 300 Xbox 360s, 500 Samsung BlackJack II mobile phones, 200 30GB Zune media players, 400 Expedia travel vouchers worth $300 each, and several thousand other Microsoft software and hardware products. The bulk of the prizes, however, include roughly 23,000 soda coupons and 1,000 $10 gift cards to an unidentified "specialty coffee retailer." While any user can currently sign up to try Office Live Workspace, only U.S. residents who are age18 or older are eligible for the prizes. Testers can sign up for both the service and the sweepstakes on Microsoft's Web site (LAI, IDG/New York Times, 3/4/08).