I actually heard about this a while ago, and It's not hard...I can make holes in posters on the wall, and it can hurt a bit. It takes like 10 minutes to figure out.
they did this on Mythbusters last week. The worst they could do was a pretty bad papercut. And this was with the worlds best card thrower (avgs 170 mph)
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.