Google has introduced Google Instant Search on Sep 8, 2010. This is a tremendous technical milestone for Google, and also for predictive analytics - since Google tries to predict users query based on what is typed, and Google Instant success will depend partly on how successful is the prediction.
This poll is now closed and here are the results of
KDnuggets Poll: Do you like Google Instant Search?
Here is an example where the www.kdnuggets.com website appears in Google Instant Search after typing just "kdn"