Everything they do differently is irrelevant as long as the user is asking them to do those things. If Gmail starts showing me fetish porn that's bad, if a feti

Everything they do differently is irrelevant as long as the user is asking them to do those things. If Gmail starts showing me fetish porn that's bad, if a fetish porn site does the same thing it's fine. The only relevant difference is security/privacy, in which Google may be more trustworthy but even that is debatable, regardless of which side of the debate you land on.