From the link:
And whenever this happens I believe it is a gift for the bears.
Take a look at the blue verical lines on the chart below, which mark each time this pattern has repeated in the past six months. Focus on what happens next. It is always what happens next in the market that matters — not many indicators are consistent as this one – a sell off every time and usually hard downs the next day (tomorrow).
For the chart and some more perspective: