When it comes down to it, we really do not know what Google actually uses; we only know what they tell us or what SEOs and site owners figure out themselves.
We have seen some evidence that they use the keywords meta tag for determining the keywords used to trigger AdSense ads.
It is very possible that they are testing the keywords meta tag with the new algorithm, but quite frankly, I don't think they are using it. What Jill found is interesting, but it may be another of the numerous anomalies we are seeing after Google launched their new ranking algorithms. If the issue that she found is predictable and repeatable, then there may be conclusive evidence.
I have always used the keywords meta tag regardless of what Google has stated in the past. There is always a chance that a smaller search engine is still using it, but even that is unlikely.
Last edited by TopDogger; 19 January, 2011 at 14:41 PM.
"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." -- Benjamin Franklin