Google - Peronalized search results

If you have a Google account and are logged into your Google account while conducting a search, you will find that the results served, are now are personalized to you. The results you get are influenced by a number of things, your search history, websites and news headlines that you have clicked on, Google bookmarks as well as the information that you have stored on you personalized home page. As this service has only recently been enabled, the results you get will not change all that much to start with but the longer you enable this service the more your results will be tailored to you.

At first I though, i'm not sure that I like the idea. Does this mean that I may be missing out on new sites as they become live because I have only been viewing a group of other websites. After investigating further though I found that Google actually looks at other users search histories that are similar to mine, and serves results that other users have clicked that have search patterns that are close to mine. This means then that it will probably help me find these new websites as these users will have visited sites I want to see.

I wonder if many other search engines will follow this move or if it will be a feature that is received warmly by Google users? As long as it improves my web browsing I am not one to complain and as it is a feature that can be disabled it will at least prevent spammy results from getting listed in my search results.