Describes several trends promoting more active consumer participation in health decisions & how consumer info. facilitates that role. Major issues in developing consumer info. are presented, stressing how orientation to consumer needs & use of social marketing techniques can yield improvement. Discusses different aspects of info. for choice of health plan, ranging form consumer perspectives on their info. needs & their comprehension of quality indicators, to methods used for providing such info., such as direct counseling & comparative health plan performance data. Charts, tables & graphs.