Here's a 24-page PDF of a powerpoint on ATM skimmers that's making the rounds in Australia. If you've been reading every ATM skimming post, most of this is review, but it contains several more examples of what skimmers can look like and what to watch out for. Though it's from an Australian bank, most of the information is general enough to apply to any ATM. A handy document to pass around to friends and family to warn them about ATM skimming dangers.