Search Engine Optimization

In the beginning, search engine optimizers worry when Google released what they call “supplemental result”. Many opinions result to the conclusion that it is bad if your website are indexed and tagged by Google as supplemental result.

For any of you who are not familiar with supplemental result, the supplemental index made it possible to index even more web pages. With supplemental result Google allows themselves to query more web pages and make its content available when generating relevant search results for user queries. Supplemental index means that web pages that are not in the main web index could be included in the supplemental. These are often pages with lower PageRank or those with more complex URLs. It is separate from Google main index robot.

You could use following syntax to see supplemental result:
site: yourdomainname.com **** -asssdsd
site: yourdomainname.com *** -asdf

Google convinces search engine optimizers that it is only one of a change within Google’s infra-structure to improve overall quality. Matt Cutts commented at Seattle SMX conference that his personal preference would be to drop the “Supplemental Result” tag altogether because those results are 1) getting fresher and fresher, and 2) starting to show up more and more often for regular web searches.