This feature is further enabled with features like adding comments and making notes about your search. These modifications will be shown to you every time you do the same search in the future. SearchWiki is available to signed-in Google users. The changes get saved into your Google Account. If you are wondering if you are signed in, you can always check by noting if your username appears in the upper right-hand side of the page.
The changes through wiki search impacts only local searches however are great way to share opinion with other searchers. Understand the concept from the You tube address given below.