The best internet options for watching Worlds appear to be:
Universal Sports (9.95$) or Ice Network (4.95$ charged on top of the Season Pass) in the US (and Canada, I assume?).
ISU Web TV in the countries listed in the other thread (Australia, Brazil, New Zealand, South Africa and loads of other countries, where figure skating isn't present - doesn't include US or the EBU countries).
In Sweden, you can watch SVT, which shows everything (other than Preliminary Rounds, sadly) but it most likely is going to be geo-blocked for anybody outside of Sweden (that was the case during Europeans).
What are the options for European fans then? And I am talking about comprehensive coverage and not internet broadcasts of tv channels, showing only small parts of the events.
Unless there is something I'm not aware of (if there is, please let us know!), I guess the best option is going to be tvteka.tv? It includes a very big selection of Russian channels (as well as Russian Eurosport) and costs 10$ for a monthly subscription.
Anybody knows details of Russian coverage? If you do, please share.
I just had a look on the websites of the channels I know and Russia 1 and Russia 2 (and its related channels) aren't showing any Worlds.
So I assume that NTV has the rights? I just had a look on the NTV website but it's only showing the schedule until Sunday, 24th April (today). :/