Know what you own. If you're long MSFT right now, it might not be all that different from owning BBY throughout 2013. Don't get too emotional. Don't get too cocky. And don't fall for the fallacy that today's hype portends Microsoft's future.
Why would MSFT wastes money on useless projects? Window phones are junks and never
will catch up ... period. It is a waste of social resources and trying to feed people with inferior products.