Consecutive days with FTF : two I think. Or three. As for consecutive months with FTF : I now have a current streak of 13 months...but February is getting near its end, I still haven't got an FTF and the new caches are coming a bit slow this month...
Half the regular sized caches over here (Flanders, Belgium) are buried underground in a pvc tube or wooden "cellar", covered with a piece of wood. Of course there is no digging involved for the seekers, but the hiders did dig a hole. Should these caches all be archived then ?
I've just adopted a cache which I've found three months ago. That means I now have a find on one of my own caches. Of course, I'm not going to delete my find.
Depends on what type of cache it is. A (sub)urban traditional is usually logged within the hour if it is published during the day. If it is published after 21pm it may last until early the next morning. Multi's can take one to two days (depending on the length, difficulty, etc...) and mystery's are variable (depends on the difficulty) from one hour or so up to a week.
For this kind of situations there should be a "DidNotSearch" or "CouldNotSearch" log type.
Why? "Did Not Find" seems to adequately describe Not Finding the cache. You can write several hundred words on why you didn't find it, if you want.
Because to me Didn't Find means "Searched and yet Couldn't Find". If I didn't search, I don't post a DNF. In that case I post a note.
Yes, I usually do it, but only on the trackable's page (so the owner gets notified), not on the cache listing.
And if a trackable has gone missing from one of my caches, I mark it as missing.