ocr: Figure 3 Business Computers Proliferate On The Net Companies have been joining the Internet at the rate of 12% per month, according to Michael Walsh, president of Internet Info, a market research and consulting firm in Falls Church, Va. Of the roughly 30,000 U.S. compa- nies that have registered, about 25% have sales in excess of $500,000, he estimates. 29,559 30,000 25,000 20,000 15,000 10,000 8,5 5,000 3,149 1,139 187 1990 1991 1992 1993 1994 Source: Internet Info