In another "Frequently Asked Questions" edition of his

"RealMoney" radio show Friday, Jim Cramer said people should never buy a stock just for the sake of being in the market because it will cause them to get hurt.

In addition, buying all at once is another way to get hurt, he said. Buy stocks in stages and over time at better prices, Cramer recommended.

An important question he gets asked is how the media affects the stock market.

"It is a very powerful influence for the short term, but not a very powerful influence for the long term," unless the news being reported is correct, which it is often not, Cramer said.

Most people you listen to on the TV or in the media wishe they weren't covering business so consequently you get journalists who are not able to give the general public "the inside skinny," he said. However, "nobody deliberately sets out to get it wrong," Cramer said.

He said he relies on media outlets that move stocks. Cramer said he reads

The Wall Street Journal

,

Barron's

, and

The Financial Times

. In addition, he watches

Bloomberg

and

CNN

and reads trade papers.

To see the most recent edition of The RealMoney Radio Recap in its entirety, please click here. This recap is published every day around 3 p.m. ET.

Jim Cramer is a director and co-founder of TheStreet.com. He contributes daily market commentary for TheStreet.com's sites and serves as an adviser to the company's CEO. Outside contributing columnists for TheStreet.com and RealMoney.com, including Cramer, may, from time to time, write about stocks in which they have a position. In such cases, appropriate disclosure is made. To see his personal portfolio and find out what trades Cramer will make before he makes them, sign up for

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