You would have seen the latest google searchwiki feature on all the search results when you are logged into your Google account, and this feature is annoying atleast for me, because i like the neat and simple google search results rather than some extra options which allow me to rank the search results and move them up and down based on my requirement.
Just click on the small arrow next to the search results to make that specific result show in the #1 location and click on the X to totally remove the website from the search result. These settings are just limited to your account and none of your changes are going to change the rankings of any website in the normal google search. You even have a option to add any website URL in the search results by clicking on ‘Add a result’ link available at the bottom of any search results page and typing the URL in the box.
If you are looking to remove these search wiki features when you are logged into your google account then you will need Greasemonkey Firefox Add-on on your browser installed which can you can download here
Once you download and install it you will need to restart your firefox browser and then add the No SearchWiki script which will totally remove the SearchWiki features from your browser and make it clean and quick. Currently this tweak works for firefox and opera browser and we need to wait until Google officially offers a solution for this.