It's regarding to voice programs like "Siri". "

Thats because you arent the typical user that utilizes siri.That is one problem that many SEOs and internet marketing types have. They think because they dont do it or wouldn't do it then the mass public wont either.

Thats just not the truth. Watch your mother use a computer and Google. Itll shock you the way they navigate the web, thats how the general public uses the web too. My wife even shocks me, I am an internet marketer and i cant help but laugh at how she searches Gogole.

I'm sure they'll continue to skip over stop-words to speed up the SERPs.

Example, of the keywords that matter in red.

I also imagine the two keywords & will have Google looking for a recent date/time on the page they rank for the entire search phrase. That's where the php current date/time code helps, for time sensitive pages, but can also be used for old evergreen pages/content.

With the amount of $$ they have, shoot I don't doubt that they can grab all that amount of data.