Top sites on user engagement

Category Composition Index
Total Internet 100
DIGG.COM 358
PEREZHILTON.COM 320
CTVGlobeMedia 310
RapidShare AG 303
DRUDGEREPORT.COM 295
MEGAUPLOAD.COM 288
HUFFINGTONPOST.COM 285
SALON.COM 283
ABCNEWS DIGITAL 278
CollegeHumor Network 270
Source: comScore