Yesterday I was searching abnout landing page testings. When I search the query “landing page testing” , I was wondered that the search engine result page contains the following screen shot. Here I have circled that different feature in SERP.
It has two different options that PROMOTE and REMOVE. when I clicked on REMOVE, that particular site was disabled from the search engine result page. When I click on PROMOTE for a particular url, that site is one position moved into above the SERP.
PROMOTE is represented here as upward arrow.
REMOVE is represented as cross symbol.
I don’t know whether it is google’s algorithm changes? If anybody see the same changes in your SERP means you can share your thoughts over here. Comment me if anything from my side is wrong or right.

November 29, 2008 at 5:40 am
Hey good to see this. Gogole was testing their Searchwiki status. On that time you have noted this screen shot. Now they have enabled their SearchWiki and you can customize search by re ranking.
January 12, 2009 at 1:01 pm
Actually, you see this only when you are logged in to Google. It gives you an opportunity to rank search results as per your liking and what you think are relevant and not. This way Google can later on structure the content / wikis on its search keywords with higher relevance for those that were promoted UP by its own users when they searched for those keywords. This helps also in localized searches for e.g. you may know about a good restaurant but it may be ranked down so you can promote it up and based on that Google will promote it on its wikis whenever that is available.