Google blocking certain keywords?

[vandread]

Here is a quick question for everyone. I recently created a series of articles that were targeting specific keywords, something like red widgets, brown widgets and blue widgets with widgets always being part of the keyword. All articles rank very well on the first page of Google after a few hours (and rank still) except for one. This one does not appear in the rankings at all.

It is in the index which was confirmed by a search for the title. It is also displayed on the first page through the Google News entry.

The thing is: The keyword alone is security related. Could it be that Google blocks new pages with that keyword from ranking in the SERPS?

If so, do you think that this is a temporary blocking (e.g. accepted after a certain time) or permanent? If not, what would be a possible explanation for this keyword not appearing while all others appear. The competition for all keywords is more or less the same give or take a few millions.

[tedster]

Could it be that Google blocks new pages with that keyword from ranking in the SERPS?

Very unlikely. I'll bet you can find lots of pages using that word and ranking very well.

It could be that this search gets special treatment of some kind, like "query deserves freshness" (QDF). This could mean that one or two "fresh" results are forced into the SERP, and your articles missed that boat. The rest of the SERP would then be more competitive, longer established pages.