Google search has always been know for its impartial rankings. Infact, you can find hundreds and thousands of instances on the web where, Google employees have clearly mentioned that Google search engine results cannot be altered manually in any way. All the rankings are algorithmic, and completely automated.

However, in a small experiment run by Ben Edelman, an assistant professor at Harvard Business School, it came to forth that Google�s search results were not quite as they seemed.

Prof Edelmen used a comma test search tool to see the real results beneath Google�s altered ones and came to realise that Google�s own sites were been given higher placement than the organic search results really showed.

The above experiment depicts that after putting the comma, the results changed to a large extent. The results which showed after putting the comma should have been the normal organically showed results in the first place.