NEW YORK (TheStreet) -- It's Monday, and that means it's time for TheStreet's Jim Cramer, co-manager of the Action Alerts PLUS portfolio, to answer some questions from of his Twitter followers. 

With issues in Ukraine clearly weighing on U.S. equities, many are wondering if it's a good time to be in the SPDR Gold Trust ETF (GLD). 

Cramer said investors should have 10% of their portfolio in the GLD ETF if they have a long-term view. With that said, he warned investors not to invest today because "it'll come back down." 

Investors have been piling into the trade as a flight to safety, but it could easily fall $40 per ounce, which is when you want to buy, he said. 

Turning to tech, Cramer said he would take a pass on buying shares of Amazon (AMZN), which did not have a good earnings quarter.  Cramer prefers (CRM), which is off nearly 10% since it reported a top- and bottom-line earnings beat Thursday. 

Finally, Cramer said he actually likes Groupon (GRPN) at current levels, despite the company reporting a worse-than-expected earnings result. 

He argued the company has a lot of good assets and has been sold off enough in the short-term to warrant a long position. "Don't leave Groupon if you own it," he concluded.

-- Written by Bret Kenwell in Petoskey, Mich.

Bret Kenwell currently writes, blogs and also contributes to Robert Weinstein's Weekly Options Newsletter.

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