This column was originally published on RealMoney on Jan. 18 at 9:03 a.m. EST. It's being republished as a bonus for TheStreet.com readers. For more information about subscribing to RealMoney, please click here.

Tough to say "Nope, that doesn't work." I remember when Matt Jacobs, my research director at my old hedge fund, would come to me with tech ideas right now, this week of the year, and I would just wave my hand for him to get out of my face. Like, Just get lost, man. Stop trying to hurt me.

He took it personally, of course. Who wouldn't? Who would like being told that all of that work on Research In Motion ( RIMM) or Network Appliance ( NTAP) or Western Digital ( WDC) was for naught?

But I knew it, because my partner at the time, Jeff Berkowitz, had run the February Goldman Sachs technology conference when he worked for Goldman, my alma mater. The idea of the meeting, held in early February, being the moment that tech had already peaked was so ingrained that while he was at Goldman, he made up yo-yos with the buy and sell points for tech on them. I am not kidding. Yo-yos!

It was Jeff who gave me the yo-yo when he started. If he had contributed only that in his 10 years with me, it would have been enough. I kept that yo-yo on my desk for years to remind me no new tech positions now.

Sure, some will be built to last. I believe you can buy Apple ( AAPL) because that guidance was just plain insulting. You don't want to leave Microsoft ( MSFT) or Hewlett-Packard ( HPQ) because of Vista. Google's ( GOOG) the most powerful earnings story out there. Cisco ( CSCO)? Immunized by downgrades and some terrific product cycles.

But in the end, the yo-yo controls.

Tech's to be sold, not bought, right here. It can be traded. Not owned. Not until the dog days of August.

Random musings: I've found your new favorite tool: TheStreet.com Ratings Screener. Use it to find exactly the stock you're looking for -- c'mon, I know you resolved that this is the year you get more involved in stocks. This is the easiest way yet to make sense of a universe of more than 6,000 names. It's all here, sorted by market cap, rating and more.

At the time of publication, Cramer was long Goldman Sachs and Hewlett-Packard. 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 Action Alerts PLUS. Watch Cramer on "Mad Money" weeknights on CNBC. Click here to order Cramer's latest book, "Mad Money: Watch TV, Get Rich," click here to order his 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." While he cannot provide personalized investment advice or recommendations, he invites you to send comments on his column by clicking here.

TheStreet.com has a revenue-sharing relationship with Traders' Library under which it receives a portion of the revenue from Traders' Library purchases by customers directed there from TheStreet.com.

More from Markets

Inside Carnival's Mind Blowing New Horizon Cruise Ship (Video)

Inside Carnival's Mind Blowing New Horizon Cruise Ship (Video)

Jim Cramer: The 10-Year Yield Could Go to 2.75%

Jim Cramer: The 10-Year Yield Could Go to 2.75%

Oil Slumps, Gas Spikes Ahead of Holiday Weekend; Assessing the Chipmakers--ICYMI

Oil Slumps, Gas Spikes Ahead of Holiday Weekend; Assessing the Chipmakers--ICYMI

Week Ahead: Wall Street Looks to Jobs Report as North Korea Meeting Less Certain

Week Ahead: Wall Street Looks to Jobs Report as North Korea Meeting Less Certain

Dow and S&P 500 Decline, Energy Shares Fall as U.S. Crude Oil Slides 4%

Dow and S&P 500 Decline, Energy Shares Fall as U.S. Crude Oil Slides 4%