> As far as I remember, when websites were doing window pop-ups and Google toolbar removed them, they didn't block the toolbar users. So, the risk is low...
He never said anything about blocking, here his exact quote about the retaliation:
> Why spend money optimizing for a browser that doesn't generate revenue?
Nobody ever optimized for a browser that had the Google toolbar installed. It's hard to stop doing something you never did.
As the other parent comment said, it will happens naturally by the mere fact that theses users won't appears on statistics. For sure it will depends on the developers, and many of them will either use Firefox directly, or simply care enough about their craft to optimize for most of the browsers even though they don't appear on stats.