It's always amusing how people are shocked when stuff like are discovered, although Gmail is designed to serve those kind of things. This is a free service, and

It's always amusing how people are shocked when stuff like are discovered, although Gmail is designed to serve those kind of things. This is a free service, and as a free service they have to make money with something. I don't see any problem with that. If you don't want this, don't use Gmail, there are lots of available alternatives.