This week Google rolled out a number of great enhancements to their search features. In addition, there’re also more subtle changes like automatic spelling correction and an extended version of personalized search, both of which’ll enhance speed and relevance of your web experience.

• Now, instead of asking "Did you mean...", when you misspell a search query, Google’s new automatic spelling correction feature shows results for the corrected query, saving you a click. In case we did misinterpret the query, there will be a link at the top of the results to undo the auto-correction.
  
• Extended Personalized Search worldwide to users who’re signed out of their Google accounts, and in more than 40 languages. Now when you search, Google will be provide most relevant results using 180 days of Google search activity from your browser. “Check help center for more details on personalized search, how we customize results and how you can turn off personalization, says Google.