Crystal Harris, the Playmate behind Playboy Hugh Hefner’s Twitter profile

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Playboy mogul Hugh Hefner is 83 years old. He doesn’t own a cellphone or spend any significant amount of time on the computer.

How could someone so disconnected from technology post several tweets a day and garner more than 100,000 Twitter followers?

He has his beautiful blond girlfriend to thank.

Crystal Harris, the costar on the new season of Playboy’s E! TV show “The Girls Next Door” and one of Hefner’s three new girlfriends, Twitters her lover’s musings.

“He writes them down, and Crystal tweets them,” said Kristina Shannon, one of Hefner’s twin girlfriends, in an interview last week at the Playboy Mansion in Los Angeles.

“Or Amanda in the office,” Hefner chimed in, “if someone forgets,” he said affectionately.

Celebrities, including Britney Spears and 50 Cent, have gotten flak in the past for having staffers Twitter for them. But if they’re actually coming from Hefner, as they assert, via his gorgeous lady friend, we’ll let it slide.

Playboy is selectively welcoming technologies into its home. Some new -- for example, the company has a cutting-edge film crew that records every interview Hefner does. Some old -- like the video-game arcade next to the mansion, complete with Playboy-branded pinball machines. Take a tour of the arcade by clicking “continue reading” below.

-- Mark Milian

Follow my commentary on technology and social media on Twitter @markmilian.