I never implied any server was "Evil" - The very fact they even wrote the software itself for any means should say it all.
Data like this can be collected for such purposes as you pointed out, we also know having such access to one's data can be used for a more nefarious purpose too. They didn't create it to be ignored, wasted or anything else except to be used for the purpose it was created for period. We also know how security matters to some of these companies, hackers have proven time and time again the security many of these have isn't all that if it even exists at all for info about the folks they gather info on.
If talking about a company's private info you'd better believe that's locked down tight and they'll spend any amount needed to keep it that way if they can.
Also the statement of whatever data they get may be harmless doesn't make me feel any better about it either, with that being said you've opened the door to the counter arguement of it being possible and we know human nature, if something can be exploited it will, esp when money is involved. Human nature is consistent in that way and all it takes is just one company, group or even an individual to make bad things happen. You know, if these guys were open about their info being gathered from us like they get ours I guess it woudn't be so bad..... However do try it sometime and see what you get.
It's the same basic concept as if you were in a dressing room with a one-way observation mirror and you're on the blind side of it.
You may be OK with that and that's your choice but I"m not.