In recent years, computers have become everyday communication tools, fast approaching the commonness of telephones and televisions. Driving this approach is the ever-expanding Internet, which enables users not only to communicate with each other, but also to search for information of particular interest. Two problems for Internet users are the time and effort necessary to find information they want and to connect with other users who share interest in similar information. Accordingly, the present inventor devised systems, methods, and related software that spurs growth of databases and/or fosters connections between users of those databases. One exemplary method entails receiving user contributions to a theme-oriented database, such as a health-information website and granting users access rights to the database based on quantity, quality, and/or relevance of their contributions. The exemplary method also shares contact information with users making similar queries of the database, ultimately promoting development of intelligent on-line communities.