It's just a jpg you take with a camera and then use as your background.
I guess they use laptops because they're easy to move out of the way long enough to take a picture. I'd love to do it but I don't really want to move this 60-pound monitor.
This is the first pornsite I've found in years that I'd actually advertise to swarmers. When you first load it up, it looks just like every crappy scam site out there, except that it's real. It's huge, it's updated constantly, there's no spam, no popups, and no bullshit -- and it's completely free. When you sign up through that link above and respond to the confirmation email, I make a bit of loose change.
See what other swarmers have to say about it. People love this place, so I feel fine about sending you there and am confident you will enjoy boners.