Is it considered a privacy threat? Like having a database of users?

Is it considered a privacy threat? Like having a database of users?
It is not available yet, as they just do not have the "blocklist/blacklist (bad sites)" function like the way Mozilla Firefox and Internet Explorer has.
I am a new forum member. I just joined to find out if I was doing something wrong when I run Spybot since it is only scanning Firefox and IE. If this is true that scanning is not available "yet" for Chrome, should I assume it never will be.I mean this post was in 2008. I would think if they were going to include Chrome, it would be by now, right? Thanks