Popularity, views, the Grid

One measure reported in "The Grid" is, popularity. It is shown as a horizontal bar. I am struggling to understand it. Matt explained it as follows:

Popularity is a relative ranking which measure how often a trading system is viewed by a registered user who is not the system owner.

Based on the explanation shown above, I would assume that a system a system that has a long horizontal bar should have a large number of unique views. However, I do not see this correlation.

Does any one have better insights on popularity