Sustainable development, biological diversity and conservation of tropical forests are only a few of the hot environmental and political topics where the actors involved have started to make use of the world-wide computer networks. The Internet (as a transport medium of information exchange) and the World Wide Web (as the favourite service to interconnect related movements) are being chosen by international organisations, scientific institutes, forest products industry and environmental activists for advocating their specific view on forestry, wood production and ecological concerns. The paper points out a few patterns of interaction by presenting Internet services of different institutions involved, for example the Food and Agriculture Organisation of the UN (FAO), the Intergovernmental Panel on Forests (IPF), the International Union of Forest Research Organisations (IUFRO) and the World Conservation Monitoring Centre (WCMC). Special attention is given to information services based on computer-mediated communication, such as the electronic clearing-house Linkages, and to action groups advocating online such as the Rainforest Action Network (RAN) or Ecological Enterprises. The difficult task of information professionals in this context will be to keep track of relevant documents and special interest networks (SINs) on the Internet. Otherwise they will not be able to serve the user in his or her needs for adequate interpretation of accessible documentation from electronic resources.