Many networks have come into existence since the public breakthrough of the Internet, but their objectives and structures are different. Translators and interpreters are using the Web to get together, for various reasons (e.g. sharing resources, new division of labour, etc.) They can also use it to promote certain values and ideologies. Ten networks are scrutinized here: How do they work? What are their purposes? Clear, differences between all these online associations can be seen - from the most politically committed to those which refer to humanitarian goals as an added value for their business. Whatever the differences, the common denominator seems to be to give more visibility to translators and interpreters as mediators.