Pushing advertisement is one thing, but if they push adware and other malware it starts to become out of hand.

It is like Soutceforge and CNet Downloads adding toolbars and adware to apps you download from them. It makes them unpopular, but they are trying to earn money.

Expect more of this sort of stuff as companies use it to earn more money.

Many network devices are old and don't have firmware updates and can be exploited.