This is a *very* interesting German decision (Hanseatisches Oberlandesgericht, Urteil vom 16.06.04, 5 U 162/03), about the use of a ccTLD in electronic commerce. A ccTLD can be misleading, according to the Higher Regional Court of Hamburg (June 16, 2004).
This court decided that the ccTLD of Barbados and Antigua, .ag, can only be used by German incorporations (Aktiengesellschaften) as "AG" is the commonly used abbreviation for such companies.
The court ruled that the use of an .ag domain by a German limited liability company (GmbH), that offers gambling games, grants the user of the domain an unjustified competitive advantage and violates the German Act Against Unfair Competition.
Unfortunately, I don't read German, and I don't know on which legal basis this decision relies (in what was the use of these initials contrary to the fairness?). But of course, this decision can only have effect in Germany: Why would a non-German firm be penalized by a German court if it uses the .ag?