I got a notice from World Superbikes today saying that as of Tuesday (29th), WorldSBK and MotoGP will be combined, such that your email address and password for MotoGP will also allow you to watch live and recorded WorldSBK races. As of that date, your WorldSBK password will no longer be valid.
MotoGP racing was already a great bargain, when its cost is compared to other entertainment, like movies. Now it's a really great bargain. I thought I'd pass along this information to any motorcycle racing enthusiasts here who might not have gotten the email. (I think I got the notice because I've subscribed to both of these international chanpionships for many years.)