Document use of taxonomy filter in views

Any view that use the Has Taxonomy Term I join is done on the taxonomy_index table which appears to only have items that are published load into it. This means that this table is not populated until a node is published. The filter should be done using the field instead.

[Old]
if you have a node that has never been published and you schedule it for a future date it doesn't show up when you change the date condition

Have a node scheduled for the 15th with no published revisions but the promoted to frontpage box checked.
Try viewing the home page as of the 17th with the date condition
That node doesn't show up.