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Apple employees downgrade Tim Cook

Apple CEO Tim Cook fell sharply in Glassdoor's tech CEO rankings this year, while Facebook's Mark Zuckerberg catapulted to No. 1.

Michael Dell gets big boost

top tech ceos michael dell

Former behemoth Dell (DELL) has struggled to compete in the dying PC market, but employees are giving CEO and founder Michael Dell a big thumbs up for his plans for the company.

After years of rumors that Dell would try to take his company private, the company finally announced a nearly $25 billion deal in February. Dell is partnering with private equity firm Silver Lake Partners and Microsoft (MSFT) for a leveraged buyout of the PC maker.

Employees seem hopeful that this is the best path for turnaround. Dell's approval rating soared nine percentage points this year to 81%.

- Last updated March 15 2013 08:18 AM ET