In London UK there have been a couple of security alerts as a result of furtive skulking around cache hides so generally, cachers seem to be getting a bit more thoughtful about where they hide. Although I'm not a great lover of nanos/micros in towns (parks etc excepted), I decide what to do when I get to the site. If there are lots of CCTVs (we are the most watched people in the world here in UK), utility boxes etc, drug apparatus, rat bait traps or people I don't bother otherwise I root about for as long as I feel comfortable; I make the call. I've only been stopped once by officials but walked away from plenty of other sites as I wasn't happy. For me caching is about great locations and ingenious hides rather than the numbers. For others it's different. There is room for us all so long as we think about the implications of what we do