Trust them to do/not do what?

I use them for search. still better than anything else out there

I trust them to do their best to keep gmail working

I trust them not to fudge my analytics data

I don't trust them to have any sense of loyalty to me at all

I don't trust them to keep my data private if given a reason not to. If Google were subpoenaed, I assume they'd give up my data in a heartbeat

I think Google has almost no moral compass, but will do what it needs to to make money. for the moment that means keeping most of its users happy, so I'm happy to use them.

I'd never trust Google for income, just as I don't trust Paypal. I'm not willing to put my livelihood in the hands of a company that can destroy it on a whim, and probably not even notice

[Edited to add that "almost no moral compass" is not the same as "no moral compass". Facebook I'd consider to have no moral compass]