

We went through the weekly Winners vs. Losers list from SEOLytics for our contestants. All the
results were checked, and only websites that showed sharp drops after the update were used
for this case study. Thankfully, the data was clear enough not to include too much noise from
the EMD/Panda20 updates.
We picked 100 websites, 50 winners and 50 losers and analyzed a number of factors to find out
what makes them different.