Why yes, I did get a cartilage piercing and yes, it did get infected. :(
Promising review: "Such a great earring, many people don't even realize it's a cuff! It took me a little while to figure out how to put it on correctly (tip: the open ends should face toward your face, and the closed or rounded off end/part of the earring clamps behind the ear — try clamping it around the thinnest part of the ear and then moving it along the ear, squeezing it tighter, or pulling it apart a little, to adjust comfort). I've showered in it, slept in it, blow-dried my hair in it, worked out in it for about a month, and the earring still looks nice and golden, and hasn't budged or tugged or been painful in any way! Again, it does take a little bit of playing around with to get it on properly, but once you've achieved that, it's an incredible piece and a great alternative to another set of piercings!" —Amazon Customer
Get them from Amazon for $11.80.