Not sure about Google

[Lamplighter]

...but if you really like a certain product, why wouldn't you want to allow people to know that you like it?

My quarrel with Facebook and then Google is/was with the idea that
they are selling "you" without compensating you for the resource.
Likewise, they are selling "you" to others without you knowing where, when, and to whom.

If someone called and asked you to endorse a product, but refused to tell you
how they were going to use that endorsement, would you still give it to them ?

e.g., a silly example...just because you "liked" or "+1'ed" a bar-casino
(or a STD Clinic ) while on vacation last year, are you OK with your kids,
friends, or members of your church randomly seeing that on their iphone ... years from now ?

I'm old school... believing that bad things happen when someone has access to
and/or uses personal information about "you" to make $ for themselves,
especially if they claim to "own" that information and will not allow you to delete or restrict it's use.
... like your medical information being used by insurance companies or employers, etc.

Likewise, for kids who are vulnerable to bullying by classmates over even the smallest of details in the lives.