On Wednesday, Cramer answered some "Mad Mail."

The first letter came from Lindell, who wondered if the sour outlook for the U.S. economy would affect Chinese stocks. Regardless of how the U.S. economy fares, she argued the Chinese are likely to continue watching videos online or microblogging, for example. Cramer agreed, but said the Chinese stock market is tough. Baidu is the only Chinese stock he can bless right now.

Next, Bob asked if Nike is a good investment for his kids. Yes, Cramer said. The company is benefiting from global growth and also recently reported strong quarterly results.

Finally, Gerald noted that baby-boomers' spending habits seem to be changing. Instead of spending, they seem to be saving. He wonders how the loss of this money might affect the economy and stock market. With fewer people spending, Cramer said investors should avoid retailers Kohl's and Target .

When this story was published, Cramer's charitable trust owned Nike.

Call Cramer: 1-800-743-CNBC

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