I duplicated Radioactivity.

I confess, I recently made public a module called Scoville which pretty much does the same thing that Radioactivity does; assigns nodes a score based on "hotness" (determined on how many hits the node has had recently, declining over time) and lets you easily build Views of recently popular content.

In the project issue queue, I've already been called out on my dupe job; check out my response for my attempts at justifying my heinous act (tl;dr: Radioactivity's D7 version is too complex and under-documented and I couldn't get it to work; other site builders may find Scoville useful as its setup process is far simpler and more documented), and, if you're so inclined, chime in either to castigate me on my affront to civil Drupal contrib module development and/or support me for taking the bull by the horns and plugging a hole in the Drupal contrib space.