Anything in /Applications - I can’t think of why I’d want to keep them in DEVONthink
Archives (.zip, etc.) - DEVONthink can’t access their content, so there’s no value for me in having them in the database
OPML - because DEVONthink explodes them into individual documents for each level, which isn’t useful at all
Anything in /System and most things in /Library or ~/Library - too dangerous – DEVONthink doesn’t warn about moves, changes, or deletions; the exception is script or template files
Anything that doesn’t relate to my work or private projects - I don’t need DEVONthink to reproduce Spotlight or file system browsers
I’m currently leaving out a number of web assets - things I use in making websites, such as templates, images and snippets. That’s because they are currently all in one place and I know where they are; because many are zipped up - and because I can’t think how DEVONthink would search for them. But perhaps tagged up?
Anything that currently exists in another database.
Specifically for me all my pictures and scanned historical photographs tagging and metadata are stored in a Lightroom catalog.
Genealogical info are stored in Reunion.
PDFs that I plan to read on my iPad are in GoodReader because I like that interface better for reading.
Sheep Inventory is in LibreOffice Files and there no way to conveniently store them in DT although I’d love a way to at least view them on my mobile devices.