It all comes down to the number of people who have visited it ... and left of course; not the ones who stay!
Every place is different, every locale unique. Assume nothing, be thorough and only log the facts.
Something else that might be worth pondering is the ways that the dead have been interred in the past. Here's how my "research" comes out on the topic:
1. In family plots. These were most often near the "old family place," although usually out of sight somewhere. After all, few wanted THAT reminder of what awaits us all so close to home. So, where there is an old, forgotten cemetary, there may be an old house site nearby as well.
2. In church yards. These are, and were, most often adjacent to the church, within at least eyesight.
I know of one old cemetary where the church moved back in the 20's. The graveyard remains, forgotten and alone, with only the woods for company. The "new" church is now 4 miles away - with a new churchyard to occupy the attentions of the living..
3. Communal burial yards - normally at the outskirts of town, or a little beyond for towns and cities. Nowadays, the town has probably surrounded the graveyard, and in some cases even moved on or been diverted in it's growth. These last sorts are ideal. Since, it takes decades for such growth to occur, the surrounding neighborhoods are bound to be oldies. Such graveyards are invariably in the "bad" parts of town, though, weed choked and overlooked.
The first two are the best for our purposes. Proabably the worst is the one right in town. Well kept and considered "monuments" themselves, there are now far more people around them to observe you. Many of these folks may not take kindly to your detecting there.
Obviously, you've overcome the theo-moral issues of cemetary detecting, so we wont re-hash those.
![:-\](https://www.treasurenet.com/smilies/undecided.gif "Undecided :-\")
