Why is zeitgeist datahub still installed?

[gold_finger]

Is there a list of known packages that use/require Zeitgeist when installing them ?

Not that I'm aware of, but someone might have made a list somewhere on the interwebs -- who knows?

I don't take what I find in other forums as fact, just putting it out there to see if it holds true, which it does not.  Hard to find a good source for information nowadays,...

Yes, it can be hard separating good from bad info, especially if dealing with relatively unfamiliar subject matter.  Get's easier to filter things over time though.  At one time or another all of us end up doing the same thing as you -- posting info that isn't accurate.  I've certainly done that myself.  Occationally I stumble on something I had posted a couple of years ago that I now know to be wrong.  I don't like the thought of me ending up being the source of misinformation, so usually I'll edit the post when I find something like that, put a correction on it in red and tell possible future readers that I was wrong originally.