I’m not sure about the credentials of this site but they have a story about new telecom rules in the EU:
The European Commission plans to introduce new rules for online text message and phone services such as Viber and Skype, the Financial Times has reported.
I found this piece of info, as I was searching about the international regulatory conference held last week in Ohrid, where according to news reports one of the topics was also new rules for services such as Viber.
I guess that If (or when) Firefox OS goes forward this might influence those users too.
Does anyone has more insight in what is going on at the EU regulators?