MtheGM, perhaps it depends on the location of the supermarket that has a bearing on how hot the security is on them. My son lives in a quaint rural area and none of the trollies in his local Tesco require a coin to release them and I can't say that I have ever seen any abandoned anywhere.

My second moan is why do some people have to plonk themselves dead centre in the middle of a pavement taking up all of the space sauntering along at a snail's pace (particularly in the morning) not allowing you to dodge around either side of them. Many times that has happened on my way to work only to see a bus that I wanted to catch drive off and all because of one person getting in the way.