Claim-jumping is definitely wrong, wrong, wrong.
But, hate to say it - a good number of people, even here, have claim-jumped.
And, they don't think anything of it - they don't think of it as claim-jumping.
How many times have you seen here, and on other sites, someone "stopping for a little while to play" at some abandoned mines, or alongside the roads. A good number of times - you are where you are not supposed to be.
Desert hunters, I think, are the worst offenders. First - its easy in the desert to get turned around, or not know exactly where you are. Second, claim markers are quite often knocked down by those out playing - with trucks and atv and bikes.
Third, in a place like the desert - very few claim owners mine during the summer - they reserve it for the winter months, so, what looks abandoned, just may not be. And, fourth, people don't do their homework - and find out if it is claimed - or figure, heck, its just for an hour or two - or, fifth - they just don't think about it - they think - hey, I'm on public land, I can md, or pan, or drywash, or whatever.
B