Cramer's first caller on his

"RealMoney" radio show Monday asked for his thoughts on

eBay

(EBAY) - Get Report

.

Cramer said that the stock will become more interesting below $30, but that eBay's core business is slowing. For this reason, he said that he will not sanction buying the stock until it falls some more.

He told another caller that now is the time to be cautious about retail stocks, including

Saks

(SKS)

.

Target

(TGT) - Get Report

reported a decent number, missed estimates by a penny, and the stock got hammered to its 52-week low, said Cramer.

Moreover, the Street is carefully watching

Wal-Mart

(WMT) - Get Report

, which reports tomorrow, for further signs of weakness.

So if Saks doesn't deliver a "picture perfect" quarter, he said that the market will take it down. The stock used to be a dynamite play, but it has come and gone, he said.

"We in a sector analysis game," Cramer said. That means that Saks is under a lot of pressure because the retail sector is under a lot of pressure.

A caller wanted to know about

Rackable

(RACK)

and when it makes sense to get out of a stock and then buy back in.

The time for Rackable has come and gone, said Cramer. Even though the stock is up 40% year-on-year, it is up only 11% year-to-date and has fallen from $56 to $39.

He said that investors want to get out of a stock when it is high, and then buy back in when the stock is weak. But Rackable has come in so much that he would not bother selling it anymore.

The company makes high-density computer servers for the Web -- a high-growth business that Cramer likes. And he said that he would add to his position if the stock goes below $38.

Cramer told another caller that we're in full sell mode on the

Nasdaq

, so he must be cautious when it comes to

Conexant

(CNXT) - Get Report

.

He said that these selloffs are brutal. "They shake people out. They hit the best companies and the worst companies ... but you must be there because you don't know when things will turn," said Cramer.

Conexant had a great quarter, but the stock is in an undesirable place. Cramer said to recognize that it will be a winner in 2006 and to stay the course.

He said that that

Advanced Micro Devices

(AMD) - Get Report

is the only semiconductor stock that he would recommend, but that he would not buy it in the near term.

AMD is up 100% year-on-year and, in a market this tough, he doesn't want to buy stocks that are still up that much.

Cramer told another caller that he would not buy

Sony

(SNE) - Get Report

at this level.

He added that he has recently seen stocks come down 30% to 40%, so he wouldn't make a move here. And he added that

Matsushita

(MC) - Get Report

is a better Japanese company.

A caller wanted to know more about

Broadwing

( BWNG), a stock that Cramer said is a very speculative situation that "has turned around."

But in the phone company sector, he would rather see investors in

Level 3 Communications

(LVLT)

or

Qwest

(Q)

. Both of these stocks have pulled back a considerable amount, he said, whereas Broadwing is up more than 200% year on year.

Cramer added that he likes stocks such as

Amgen

(AMGN) - Get Report

,

Biogen

(BIIB) - Get Report

and

Celgene

(CELG) - Get Report

and that he believes now is an OK time to start "picking at" oil stocks.

However, Cramer said that commodities are still going down, along with big speculative stocks like Broadwing.

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.

James J. 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

Action Alerts PLUS. While he cannot provide personalized investment advice or recommendations, he invites you to send comments on his column by

clicking here. Listen to Cramer's RealMoney Radio show on your computer; just click

here. Watch Cramer on "Mad Money" at 6 p.m. ET weeknights on CNBC. Click

here to order Cramer's latest book, "Real Money: Sane Investing in an Insane World," click

here to get his second book, "You Got Screwed!" and click

here to order Cramer's autobiography, "Confessions of a Street Addict."