Cramer's 'Mad Money Lightning Round': Potash of Gold

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Here's what Jim Cramer had to say about some of the stocks that callers offered up during the "Mad Money Lightning Round" Thursday evening:

Potash (POT Quote) has "been on the 52-week-high list for what seems like months. ... And you know what? I still like it. ... The ag complex ... [is] in major bull-market mode. Stay with Potash."

Cisco (CSCO Quote): "I went over that conference call really closely. ... That quarter was good. ... We're down a buck and a half, and I think it's worth it to pull the trigger right here."

Harris Interactive (HPOL Quote): "I'm not gonna give you a buy there." Cramer said the company was too small and would have to be bought out in order to grow.

Lamar Advertising (LAMR Quote): "I just sold Lamar for Action Alerts PLUS," Cramer's charitable trust. "They make billboards ... and they're very exciting," but Cramer said they might be so exciting that they'd cause accidents. "I'm worried about regulation coming in."

Clearwire (CLWR Quote): "I want to stick by Clearwire."

"Virgin Media (VMED Quote) is Richard Branson. He hasn't even started the triple play yet. I was early on this stock. ... We're down a dollar on this stock, and I think we should stay with Virgin."

ViaSat(VSAT Quote): "I was surprised to see that stock go down. ... I think the stock should be higher. I think you've got to stick with it."

HMS Holdings(HMSY Quote): At more than twice its growth, Cramer said, "this stock is very expensive ... so I cannot recommend it on the show, but I like that segment [health care information management] very much."