Does the science world have its own version of the Kardashians? According to this article (written by a British geneticist Neil Hall, who himself has >1500 Twitter followers), certain scientists have way more Twitter followers than should be warranted by their publication records. To measure this effect, he invented the "Kardashian index", which is a metric similar to the h-index; however, instead of productivity, it measures the "discrepancy between a scientist’s social media profile and