The scribd link is down for me, but there's a free version available here: http://privatewww.essex.ac.uk/~agaleo/wp_files/NewStuff/Popu...

If you don't want to read the whole paper, the interesting sections are, Table 2, sections 3.2 and 3.2 (including Table 3), and, of course, the intro and conclusion.

Frankly, I'm surprised the wage premium for popularity is so low. The wage premium for managers (and execs) is high, and folks who have good people skills are much more likely to become managers. So, why isn't the wage premium higher?