People are posting photos of their debit and credit cards on Twitter. Some of them are lightly blurred– such as the one above which has a fake tilt shift effect added to it –but most are just straight photos of the cards with all the information unobscured. Mostly these are new cardholders bragging about their newly-acquired financial freedom, a few people shared photos of cards they'd snapped in half.
They're all publicly available photos, and the Twitter account @NeedADebitCard dutifully collects them all in one place, ostensibly to teach people not to post their goddamned financial information all over the Internet. Why bother with ATM skimmers when you can just search the web?