So, It's almost 100% clear, that MS-critical websites are removed or at least down-ranked at live.com - I just tried to search by ooxml keyword and found, that nooxml.org is on first place ! Strange thing, right ?
But when I tried to search by pressing on link found in this post - I saw very different results, without nooxml.org :-/ Very strange, right ?
So, tried to found differences between these searches and found, that difference is default search engine language - I'm from Lithuania, so, live.com website as default is translated to Lithuanian language for me and shows completely different search results than live.com in English language !
I tested with other languages and noticed, that Microsoft filters mainly search results when language is set to English (en-us and en-gb), but not only - it seems in majority of languages (German, Russian, Polish, Lithuanian, etc) nooxml.org is in first place and results count is more than 2 200 000 but in searches in some languages, at least in English US, GB and IE produces completely different results - in en-us there are only about 26 000, in en-gb - about 800 000, etc.
So, look at these searches and see how Microsoft removes microsoft-critical web pages from live.com search:
http://search.live.com/results.aspx?q=ooxml&go=Search&mkt=en-us&scope=&FORM=LIVSOP
http://search.live.com/results.aspx?q=ooxml&go=Search&mkt=en-gb&scope=&FORM=LIVSOP
http://search.live.com/results.aspx?q=ooxml&go=Search&mkt=en-ie&scope=&FORM=LIVSOP
http://search.live.com/results.aspx?q=ooxml&go=Search&mkt=de-de&scope=&FORM=LIVSOP
http://search.live.com/results.aspx?q=ooxml&go=Search&mkt=pl-pl&scope=&FORM=LIVSOP
http://search.live.com/results.aspx?q=ooxml&go=Search&mkt=lt-lt&scope=&FORM=LIVSOP
http://search.live.com/results.aspx?q=ooxml&go=Search&mkt=ru-ru&scope=&FORM=LIVSOP
Look at the numbers of "Web results" - in most cases results are more than 2 200 000, while in en-us - only about 26 000 !