Google making better search -- A better way to lead

Google core mission statement:

"we want to ensure that we can help users everywhere find the things they're looking for; providing accurate, relevant results for searches in all languages worldwide."

New features from Google for betterment of search :

1) Google is building language models which means now users can easily search out for what they are looking in different language even their own mother tongue.What is model
2)Spelling corrections
3)Alternative forms of words
4)Language translation
5)Suggest alternate words in your own language

Learn more from this post of official Google blog

http://googleblog.blogspot.com/2008/03/making-search-better-in-catalonia.html

For making people safer on net specially with Google,Google had performed and looking forward to understand the upcoming potential threats there is a fine post "Using log data to help keep you safe" at Google blog where they are telling how they analyze the server logs for anomalies or other clues that might suggest malware or phishing attacks in our search results, attacks on our products and services, and other threats to our users.

I am not a technical person and nor I want to become but it seems good to me that they are really making the internet world more safer.In this post they haven't told much about how they track out the vulnerable or dangerous things but they have given a example of Santy search worm (PDF) == This worn was discovered in late 2004 and this worm used various combinations of search terms on Google to identify and then infect vulnerable web servers. Once a web server was infected, it became part of a botnet and started searching Google for more vulnerable servers. Spreading in this way, Santy quickly infected thousands and thousands of web servers across the Internet.

What google did ?

Google made a series of tools which automatically generate "regular expressions" that could identify the potential Santy queries and then immediately block them from accessing Google.com or flag them dangerous for further attention. But what happens when there are queries from legitimate user so they customised tools according it.Now if it turned out that a regular expression affected too many legitimate user queries, the tools would automatically adjust the expression, analyze its performance against the log data again, and then repeat the process as many times as necessary.