Rock art revealed
The highest concentration of ancient rock art ever discovered in the Highlands has been found on hillside farmland in Ross-shire http://www.ross-shirejournal.co.uk/News/Ancient-rock-art-uncovered-in-Evanton-31012013.htm

“Sado 81” reveals all!
http://www.metaldetectingforum.co.uk/viewtopic.php?f=10&t=42491

“Does anyone of You sell or keep those-say sixpences and come to the landowner to give him the 50% of it? Well- I dont….. I cant imagine myself giving say £12.50 (50% value) (if I had a good day detecting) to the person who owns 2000 acres with 1000 dairy cattle….. My farmers will get 50% value of items CLASSED as TREASURE only. Am I doing something wrong here?”

Yes Sado, you are. The objects are 100% his not yours so if he hasn’t agreed then it’s theft. Think of it as nighthawking but far worse as there are far more of you than them. Your inconsequential £25 a week (100% value) could be £1200 a year and if just 3,000 detectorists do the same as you that’s an inconsequential £3.6 million being stolen from farmers by legal detectorists annually. Now, what was it you were saying about nighthawks giving detecting a bad name?

PS, Paul Barford has much more to add  http://paul-barford.blogspot.co.uk/2013/02/focus-on-uk-metal-detecting-sixpence.html Concealing finds IS nighthawking says Glasgow University.