Porn Valley- According to BBC News, half the Viagra sold on the Internet might be counterfeit. British scientists analyzed samples of the anti-impotence drug sold on the Web and found that many of the pills contained different components or less of the active ingredient than the top-selling pharmaceutical.

Viagra works by allowing more blood-flow to the penis during sexual arousal. With penis problems (or "PP" as I like to call it) affecting about 152 million men worldwide, there is obviously a large, throbbing audience for the drug. Of course, I personally would know nothing of these problems and have only read about them in the liberal media or heard about them from my Commie pervert friend (you know who you are you horny bastard!).

But all this talk of erections and wonder drugs has me thinking about who this plight really hits the hardest: porn stars! These people have sex on camera for a living and, much like an architect or construction site foremen, are dealing with erections on a daily basis. We all know that men sometimes have trouble, er, getting excited and staying that way (well, not me, of course), but imagine having to be on call, as it were, all day, every day. How does one keep it up? Viagra, of course! But now that we've learned that some Viagra may not be what it seems, one has to wonder how this affects the day-to-day world of a porn star. We spoke to Finnish blonde bombshell Karina to find out how this shakeup shakes down for her.

Do you think Viagra helps a male porn star's performance?

Karina: I don't know. My on-screen partners never have trouble "performing." I don't know if it is Viagra or just me!

Have you ever suggested a partner use it when they had problems (on-camera or off)?

Karina: No.

Have you ever asked a real-life sexual partner to use it?

Karina: Yes, I have asked my real life partner to try Viagra and, yes, it did help quite a bit. I love how long it lasts!

What is your favorite sexual enhancer to use on yourself?

Karina: Those who know me, know that it is red wine, baby. But on set, I don't use anything. I am all natural in my scenes.

Would you be pissed if you found out that the Viagra your partner was popping was fake?

Karina: Yes, if I had paid for the real thing.

How would you know?

Karina: Now that you mention it, I guess I wouldn't mind if I didn't notice a difference.

What would say to him, if you suspected it?

Karina: I don't care what my man takes -- as long as he is ready to please me, no questions asked.

You can see Karina on screen in her many adult videos, catch her on the E!'s Howard Stern show, or go to her official Website (which of course is a little to racy for us to link to here, kids!).