AppsData

Mine is not a problem as much as the seeking for more knowledge. I seems that
all programs want to put its' data in hidden system files which never get
cleaned out because it is hidden. Is there a problem by channeling all of
this data to a common file which isn't a system file? Where one can access it
occassionally to clean it up. I seem to lose a lot of disc space and memory
to data and backups which are no longer needed.
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Just a Novice, Single User, trying to learn.