Another possibility: people have tired of your formula. Andrey Karpov used to submit blog posts with the results of running his fancy commercial static analyzer

Another possibility: people have tired of your formula. Andrey Karpov used to submit blog posts with the results of running his fancy commercial static analyzer on various open source code to Reddit. The first several got a lot of upvotes; a while later it became clear that it was mostly hocking a product. The more your blog comes to resemble an infomercial the less you can expect to be on the front page.