Want to try before you buy? Gizmodo has a video of the app in action (as well as another, different, flip strip app that you may also want to check out).

· New SuicideGirls Flip Strip iPhone App (suicidegirls.com)
· SuicideGirls' Twitter (twitter.com)

You're probably wondering to yourself right now if there's anyway this could get any better—and you're in luck, because there is. In honor of the tenth anniversary of "Fight Club," the overlords of SuicideGirls have deemed that this set will be made free to the public.

Yes, it's your lucky day.

We've pulled a couple of samples, just to give you a taste of the action, but we highly recommend viewing the full set in all its glory.

Oh, and you might want to bring a towel with you. You know, to wipe the "sweat" off your "face."

· SuicideGirls' Fight Club Opens For Public Spar (suicidegirls.com)
· Fight Club (suicidegirls.com)

It seems that the make out in question happened back in January, during Burning Angel's AVN party at the Las Vegas Beauty Bar (and, at least for a moment, involved an unidentified—but very topless—third girl). We're a bit shocked that we didn't hear of this momentous make out sooner—but hey, at least Joanna took picture of it!

· Zui + JA = <3
· Zui Suicide (suicidegirls.com)

Now, we're not going to pretend that this list is in anyway definitive. First of all, it's based on Alexa rankings, which should always be taken with a very large grain of salt; secondly, it's not clear what, exactly, was used to determine a website's altness (God's Girls, which some might happily include in the genre, is nowhere to be seen on the list, despite having an Alexa ranking that trumps all but that of SuicideGirls—and don't even get us started on Zivity).

But, all that aside, we have this list, and so we might as well use it to tell you a bit about some of the world's foremost altporn sites. Who knows, you might just find your new favorite thing!

SuicideGirls: Though SuicideGirls was hardly the first alt site to hit the web, it was one of the first to garner massive amounts of attention. The combination of hot young tattooed girls, beautiful photography, fancy social networking tools, and some really slick marketing and branding all combined to make one hot site. Years of success have also meant years of drama, including a whole host of models who accuse SG of not treating them well. Some also argue that the focus on adding more and more models has diluted the site's quality (then again: nearly 2000 models!).

Burning Angel: The brainchild of Fleshbot Supreme Commandress Joanna Angel, Burning Angel brings all the best in sexy punk girls, hot hardcore vids, and all the online community you could want on a porn site. Also, Joanna Angel (nuff said, we should think).

Crazy Babe: Photographer Bob Coulter shoots just about every alt model you could ever hope to see naked, including more than a few who've earned the coveted Crush Object^TM title. However, all the photos are shot by Bob Coulter, who shoots in a dark, distinctive style. If you don't like his photos, you probably won't like the site.

Gothic Sluts: One of the first sites in the Blueblood Network, Gothic Sluts features goth girls... in the nude. Over the many years they've been in play, Forrest Black and Amelia G. have tapped some of the finest fetish models we know to appear in their work.

Lazerbunny: Along with Burning Angel, Lazerbunny is one of the few alt sites to break the hardcore barrier and go, you know, deeper. More than a few lovelies are featured on the pages of Lazerbunny, including, yes, the one and only Fleshbot Supreme Commandress Stoya, who was a Lazerbunny contract star in the days before Digital Playground snapped her up.

Broken Dollz: The founders of Broken Dollz wanted to make a porn site unlike any other—they ended up with one very much like all other alt sites. We'll forgive them that, however, as long as they continue to shoot hot models... naked.

Razor Dolls: Razor Dolls had photos, movies, softcore, hardcore, Stoya—and yet they haven't updated in over a year, so, uh, they might not be your first choice for new favorite thing.

Supercult: Though Supercult was one of the original alt sites, launching around the same time as Suicide Girls, it never quite rose to the same prominence as some of its siblings. However, now that alt legend Apnea is in the mix, perhaps that will change.

Erotique Digitale: A collection of photos by photographer Kelly Lind, who—like Bob Coulter—has attracted some of the finest models we know. Dana Dearmond, Jana Cova, Joanna Angel, and, yes, Stoya... need we say more?

No Fauxxx: Self-described as porn made by ladies, artists, and queers, No Fauxxx is a truly alternative "alt" site. Featuring every body and every gender, it's a porn site like no other. Or at least no other that we've seen.

· The AltPorn Top 10 Sites of All Time. #1 (lazerbunny.com)

The first time SuicideGirls put out a book, they made one fatal mistake: instead of just focusing on the stuff that makes SuicideGirls great (i.e. photos of hot naked girls), they cluttered the whole thing up with a bunch of words. Thankfully, they've learned from their mistakes. In their follow up tome, SuicideGirls: Beauty Redefined, they've chosen to focus exclusively on the pretty pictures, celebrating the "redefined beauty" that made SuicideGirls stand out from the crowd.

It may be a little late to be thinking about holiday gifts, but we think that SuicideGirls: Beauty Redefined would make an excellent present for any discerning pervert. But don't take our word for it: take a peek inside with our sample gallery below.

· Buy SuicideGirls: Beauty Redefined (suicidegirls.com)

• Marisa DiMattia's Erotic Ink: Part 1 and Part 2 (suicidegirls.com)
• See also: Live Girl Review: Marisa DiMattia on Sex & Tattoos (livegirlreview.com)
• Needled (needled.com)
• Thumbnail via The Lovely Brenda (brendastaudenmaier.com)

The Semi-Retirement: When some girls quit the business, they just quit one part of it. Take Lexi Bardot, for instance, who may have left Porn Valley but who still creates online content. Wich is something we're extremely grateful for.

The (Very) Brief Exit: We were heartbroken when Belladonna announced that she was going to be retiring from the hardcore life due to an STD scare Thankfully, we weren't heartbroken for very long: less than a month after that announcement, she was back in the saddle again, which is exactly where we like to see her.

The Higher Calling: When Jesus calls, porn stars answer — at least when those porn stars are Crissy Moran and Erica Campbell, who left the jizz biz for the Jesus biz. We tried telling them that looking at them naked was a different but equally valid religious experience, but they chose to take a different path anyway.

The Very Public Exit: Who could ever forget Jenna Jameson? And who could forget her announcing, in the thick of the 2008 AVN Awards, that she "would never spread [her] legs for this industry again"? Hey, if you're going to quit porn, you might as well do it in front of a live audience comprised of a lot of the people who made you a star in the first place.

When The Past Comes Calling: Sometimes, even webcam girls get the blues (and the urge to quit): Tiffany Teen was driven to quit the life of a barely legal webcam girl after pictures from her high school yearbook were posted online. Sometimes, the past should stay the past (especially when it scares pretty girls away from being naked.)

Committing Suicide: With all the drama that's gone on at alt megasite SuicideGirls, it's not surprising that they've inspired more than a few creative (and dramatic) exits, including the one time near thirty models quit at once. For sheer style, though, we'd like to single out Flux, who managed to quit with a pretty piece of prose that tugged at our heartstrings. And let's not forget Dia while we're at it.

So did we miss anyone? Let us know your favorite porn star exits in the comments.