Should bloggers be subject to a code of practice, like journalists? This was one of the questions debated this morning by the first Internet Governance Forum (IGF), a talking shop organized by the U.N. in Athens.

The Greek hosts have scored a spectacular own goal with the reported arrest of Antonis Tsipropoulos, whose alleged "crime" was linking to blog posts hosted in the U.S. that satirize a Greek businessman. Tsipropoulos is the administrator for a Greek blog search engine, blogme.gr.

The incident highlights again concerns raised by Irrepressible.info, a joint Amnesty International and Observer campaign promoting freedom of speech online.

In today's session on "openness", Theodoros Roussopoulos, the Greek minister of state, denied knowledge of the case but said: "We have a problem with bloggers who spread lies through television ... we have bloggers who create false news ... So yes, perhaps a code of behavior is an idea."