I admit I have gotten a bit carried away with tags. I have imported over 8000 entries, most with the "log" tag. For news articles, emails, meeting minutes and other classifications i use those specific tags.
I got a bit carried away and started tagging everything without thinking of the long term utility.
Example: I am a writer and started tagging logs which mention the book i was working on with "writing" and the title of the book. Example two tags: "writing" and "The Seventh Dwarf".
Then I decided to use one tag: "writing:TheSeventhDwarf" to cut back on the number of tags.
Then I decided the colon is unnecessary so used the compound tag "writing SeventhDwarf"
But I went back to o two separate tags because it is more flexible and you can use AND as follows: search Writing AND Seventh Dwarf. So I can look at all the logs which mention me writing, or just the specific work. Which is useful to see when I started a book or poem or song lyric or look something up.
In case Timo reads this it would be useful to have a count of hits displayed.
Shameless plug: my novel "The Seventh Dwarf", a reimagining of Snow White is available on Amazon.
Now I can look at the entries that are not logs by searching NOT log.
I also use numerical trackers: weight, steps, pile (for the amount of money in my stocks).
I am just getting used to Diarium and probably have made a mess of the tags. Maybe some more seasoned users can provide a more reasoned approach.