Popularity Payload Index (PPI)
Author: Magnus Morgenstern

The popularity rating of grids is the most important indicator of the success of any project in the virtual universe. It is generally accepted that the more visitors, the "better" and more popular the grid. It is difficult to disagree with this provision. Indeed, if your grid is visited by a small number of users, then it is relatively less relevant and in demand. On the other hand, if the number of visits is large and constantly growing every month, then your project is developing and becoming more interesting and necessary for the virtual community.

Details: https://soziarium.su/read-blog..../30_popularity-paylo