I'm still a new to geocaching but very addicted. I have been using my own philosphy on DNF's. I usually never look at hints, logs, cache names or cache pages before searching. I use a geomate jr, turn it on, reach GZ and the search is on. So if I come to a micro and GZ is a bush at a busy intersection, I'll look for maybe a minute get bored and move on; no DNF. But if I search and search until I just give up I'd post a DNF. After reading these posts, I'm going to adopt the "If I'm in the area and DNF it, I'll log it." In fact I'm going back the past week and logging all the DNF's I can remember.