Cramer is an expert on "worthless". He has pumped tons of it on his show. Look, Cramer is an entertainer, so watch the show for it's entertainment value, not investment advice. All that said, he does have the power to move a stock, one way or the other. The effect is short term though. Selling yesterday into that huge upward move was a no-brainer for me, as it should have been for many others. There will be more opportunities though, as this stock and few others are going to reverse themselves and climb to the stratosphere without looking back. In this market, a run like that was destined to run out of fuel. I'm surprised that it got as high as it did.