Cramer's a trader, not an investor. He always advises "Take some money off the table"; "Bulls make money. Bears make money. But pigs get slaughtered!"
Anyway, don't you read the waiver at the beginning of the show? Cramer's opinions are not to be construed as investment advice. Furthermore, viewers should seek professional investment advice from their financial advisors.
I like Cramer, but here's where I differ with him: he hates the airlines and won't concede that AMR is a winner. I'm buying AMR. I like the charts and the stock's momentum. Cramer just hates airlines!