I’m a big fan of the Social Recruitment Monitor from global recruitment advertising, branding and marketing company Maximum.
What I like about this index is that they collect a whole range of data to calculate who is working best on Facebook, Twitter and LinkedIn. The algorithm behind the scoring is explained in this way:
The SRM Index applied to Facebook
The calculation of the SRM index for Facebook focuses mainly on interactivity. We look not only at how your page is interacting with fans, but also at how your fans are interacting with one another, thus forming a community on your page. A strong fan base is also important because it means that shared content is reaching a lot of fans. So the blend of measurable parameters we use to create your SRM Index for Facebook is as follows…