Sorry off topic for the benefit of the resident loon.
Hammers are generally reversal candlesticks and the one magicpants referred to on the BLVN chart was supposed to be an indication that the downtrend was coming to an end and a change to the share price fortunes could be expected.
But on it's own a hammer is meaningless, it needs further evidence, such as bullish candles immediately afterwards. The hammer on the BLVN chart was followed by a continuation of the downtrend and is now rendered invalid.