Look in the archives and you’ll find a rant concerning sites that rely entirely on Flash.
Then take a quick gander at this entry on the US-CERT vulnerbilities page.
Guess what? Flash is busted.
To recap: too many big sites are just completely unusable without Flash.
In this case the vendor’s already supplied a patch.
Next time: who knows?
(and just how long have we been sitting here vulnerable?).