^^^ THIS.
Pretty much sums it up. Everybody is now suddenly 'feeling' their car accelerate. Placebo effect IMO.
Not to say that there may not be faulty vehicles out there. But the chance of this affecting you is very small.
What is more, car and driver recently did a test on stuck accelerators on Camry's and even at 120 MPH, the brakes were powerful enough to bring the car to a stop or reasonable speed to regain control / take action (i.e. shutting the car off), and to make any accident a low speed issue. Read again: Most brakes are powerful enough to overcome an engine at full throttle, in this case, all 268HP on the Camry.
Of course the media loves a good 'roast' of a Japanese automaker, especially since the current automobile economy is in the shitter.
My bet is that those unaffected Toyota owners will continue to buy Toyota's. Those affected who raise a stink may be swayed with car washes and free oil changes and a very small percentages may abandon the brand altogether.