Case 01
Demand Media / eHow
Google changed organic discovery.
eHow represented approximately 30–31% of company revenue before Google's Panda changes materially affected search visibility.
Outcome — The channel never recovered to its former position.
Mechanism
There was no relationship underneath the traffic.
Evidence · High confidenceView evidence +Hide evidence −
Position
eHow depended heavily on Google organic discovery.
eHow represented approximately 30–31% of company revenue in 2012–2013.
What happened
Google introduced the Panda algorithm change in 2011.
Third-party measurement services reported major declines in traffic and search visibility, including a 66% decline in eHow's Sistrix visibility index.
Response
Demand initially disputed the magnitude of the external measurements.
The company subsequently worked to improve content quality while increasingly relying on its separate domain registrar business.
Outcome
The stock fell approximately 38% over two weeks and never returned to its former position.
The registrar business was eventually separated and the remaining company became Leaf Group.
Mechanism
Every visit was intermediated. Every visitor was effectively anonymous. When the intermediary changed the rules, there was no second surface where the same demand naturally appeared.
Evidence base · High confidence
Dated algorithm releases, third-party traffic measurement, company statements and revenue concentration derived from filings.