With Black Friday and Cyber Monday behind us, and the holiday season upon us, we'll dive into what's worked and what hasn't when it comes to running a sale on your WordPress plugin.

On this most spookiest of days, we'll be reviewing the topic which haunts all of us: churn. The dreadful truth is that customers are vanishing every single month. And when studies suggest that acquiring a new customer costs on average five times as much as retaining an existing one, its clearly...