In late February, Google gave webmasters a rare treat by supplying a detailed list of updates to their search engine algorithm. Continuing with item-by-item analysis:
10. “Site:” query update [launch codename “Semicolon”, project codename “Dice”] This change improves the ranking for queries using the “site:” operator by increasing the diversity of results.
The “site:” operator is a handy advanced search tool you can use on Google Search to see the pages that Google has indexed for a Website.
Judging by the description it appears that Google is now more carefully selecting URLs to display for this advanced search query. This would help the display for larger websites that have many URLs, as well as many different types of pages. Rather than displaying page after page of results of a similar type up front, you should now be getting a more diverse mix of pages that will better help you understand the website more quickly.
When using the “site:” operator, Google will also display an ad encouraging you to set up Webmaster Tools. What you, as a webmaster, will gain from Google Webmaster Tools is not an improved version of the “site:” operator, but other data that will help supplement it.
Previous Articles covering Google Panda 3.3
No. 1 -More Coverage for Related Searches
No. 2: Tweak the Categorizer for Expanded Sitelinks
No. 3: Less Duplication in Expanded Sitelinks
No. 4: More consistent thumbnail sizes on results page
No. 5: More locally relevant predictions in YouTube
No. 6: More accurate detection of official pages
No. 7: Refreshed per-URL country information
No. 8: Expand the size of our images index in Universal Search
No. 9: Minor tuning of autocomplete policy algorithms