Raiting should be renamed to "Recommendations" (or "Recom. by" or something similar if you need something shorter).
Recommend is used in the character statistics pane button.
This number should also show when you look at a single character, otherwise it will be unknown to all who look at your shared build.
Should I be allowed to Recommend my own builds? Currently you can do it.
What is the Popularity column in the saved builds list by the way?