Ask HN: Blog post on pricing structure and revenue? please help

I hate to ask using an ASK HN, but I've searched wide and far and can't find the article. There was a blog post on here a few weeks back on pricing strategy that made the front page. I believe it was for a web app, and the company discovered through segmentation and other techniques that they were leaving a lot of money on the table. They changed their pricing structure and this led to a significant increase in revenues. I believe the company worked with a consultant.