I had hopes for this thread, but I hardly consider 30 min updates as "real time".
EDIT 2013-04-15:History value is now calculated from our database (no 15min cache), thus there are no 15 or 30 minute update.
Value is now updated every 30 seconds (no Auto-Updating feature yet).
30 min update is only applied to history value, since it won't be updated so often at Mt. Gox.
It is going to be lowered to 15 minutes though (maximum API request limit for history value at Mt. Gox).
But yeah true. In the future there is going to be history value which relies on our own systems.
Thank you for your feedback!