Microsoft Bing has many flaws, but this one seems to be the most outrageous one. If you try to search for OpenOffice on Bing, it will not show you the actual OpenOffice.org website but will show pages from random websites like OpenOffice.com or other non-OpenOffice.org websites.
On the other hand Google search shows OpenOffice.org as the first search result. Bing has gone to an extent that in fact you will not find the OpenOffice website even in the 5th page. So, a Bing surfer will never land on OpenOffice.org website.