I post DNFs. No other way to know if a hider has underestimated the difficulty, or get concerned that 5 DNFs in a row may indicate a muggling, etc.
To me its about getting out there, if you got to GZ for 10 caches and only found 6, you end up showing that you got 10 cache spots, which is a good effort, if you only log the 6 it doesnt look like you did as much Even if I cant find them you can see I'm out there