RedRagan: It's actually worse. They keep downloading stuff to advertise to you and they keep tracking your activities. I'm not surprised if some of them upload our data and sell it.
timppu: You mean Google? :)
In this case I am discussing separately the privacy concerns (by Google etc.) and all the extra crap that will clutter your system due to certain freeware.
They also eat up your battery even when you're idle since they send and receive data behind your back.
I remember my Android phone. When I got it for the first time I start filling it with tons of apps, half of them are vanity type apps (aka junk apps). My phone only survive 12 hours battery life. After some derp I ended up erased all my apps and later on I only install pretty necessary apps. The result? almost 2 days of idle time.
