A little more testing, this time on some major US sites:

CNN: 125 sites
MSNBC: 135 sites
Weather.com: 120 sites
Yahoo: 106 sites
MSN: 31 sites
AP News: 134 sites
AOL: 107 sites
FAUX News: 138 sites
ABC News: 74 sites
NBC News: 115 sites
CBS News: 123 sites