Why bother though? I mean "fairsearch" and Microsoft? why not just shrug it off like the obvious propaganda it is, nothing good can come out of referencing them.
i agree with not feeding the troll, but its a good opportunity to make other clear statement regarding the privacy policy and the tools available to control your data on Google. The latter is really helpful to the consumer so they understand what is available to them, so the more they say it, the better (even if it is as a response to a troll).