Go, go Viviane!
Roaming charges are particularly iniquitous as they we never part of the licence auctions and are in effect freebies for the networks so there is plenty of scope for rebates. It should be noted that a deadline of 1st July 2008 probably means no regulation before October just like last year, ie. many travellers might not benefit before 2009. Any regulation will probably be watered down by the national governments just like the voice charges were. SMS is probably going to be the biggest battleground as even it's very little traffic it's probably what most people use when travelling and most networks doubled the charges for international SMS when they rolled out new voice tarriffs. Data tarriffs are ridiculous but as a result most business travellers use WLAN hotspots. This is a case of the networks shooting themselves in the foot: they get a tiny percentage of the market because the customers are discerning. There are some notable exceptions but tied to particular networks and entirely unsuitable for the occasional traveller.