I’ve just noticed an interesting feature that looks like something Google are just testing – results updating live as you type your query.
From Gabriel Stricker, Google spokesperson:
“At any given time we are running between 50-200 search experiments. You can learn more on our blog.”
It seems very possible limited bandwidth or CPU could slow live search updating interactions and as to what this means for products like Google Ad Words who knows? Perhaps this is why Google is running these tests?