readership

from WordNet (r) 3.0 (2006)
readership
    n 1: the audience reached by written communications (books or
         magazines or newspapers etc.)
    
from The Collaborative International Dictionary of English v.0.48
Readership \Read"er*ship\, n.
   The office of reader. --Lyell.
   [1913 Webster]
    

[email protected]