SEARCH RESULTS TO SHOW GMAIL EMAIL...

Search Results to Show Gmail Email: Google announced Wednesday that in an effort to deliver more personal responses during Google searches, it will let Gmail users to see relevant e-mails alongside regular search results done on Google. The feature is part of an experiment that users must sign up for onGoogle's Search Experiments website. The algorithm doesn't search users' email accounts every time they do searches, but instead offers to show Gmail addresses for certain types of queries. When you search for a person in your contacts list, you may see contact information plus a list of recent e-mails.
 viaPCWorld