It's no secret. You know all those sites you're addicted to? All the MySpaces and Friendsters and YouTubes? Those are Web 2.0 sites, and they don't like porn. Oh, sure, all of the ground-up, user-generated, syndicated, bloggy websites that make up the so-called second iteration of the Internet are gigantic, sprawling homes to countless porn star profiles -- but those profiles are always in danger of getting deleted.

I could write a long list of adult stars who have their MySpace or YouTube accounts deleted, but for starters: Courtney Cummz told XFANZ she had her account deleted. Cayton Caley, who's no longer in the industry, said she had her account deleted 10 times.

Adult star Amber Peach is going through the drama of another deletion. She lost her first profile and the color scheme she had built for it, then rebuilt it with a new color scheme that she saved. (For you MySpace addicts out there: that text file you use to change the color scheme on your profile is called a cascading style sheet, or CSS file.)

Peach made sure to save everything about her profile the second time around, but she got blocked out again after sending out bulletins to promote a party to benefit leukemia-stricken adult star Nicki Hunter.

"[MySpace] flagged me for spamming, but they don't look into what gets flagged as spam," she told XFANZ. "I even got two death threats."

As for MySpace's policy or method of deleting spam and spammers -- who knows? The XFANZ staff has encountered similar problems using Web 2.0 sites for organization and promotion, and our repeated phone calls and emails were ignored in most cases (I'll mention the ones that weren't).

As for the death threats, Peach said one guy told her, "Fuck your charity," while another said he would "shoot her in the head."

Tech blogger Kathy Sierra recently got inundated with death threats, too, for no other reason than because she was a woman writing about a male-dominated industry.

Despite the vehemence of the threats, though, Peach pressed on.

"It only scares me so much when the guy can't even spell 'fuck your charity' right,” she said.

Besides slimy death threats, Peach has rebuilt her MySpace profile, and she plans to re-add every one of the 9,000 friends she lost.

Now, maybe at this point you're thinking, "Well, what did you expect, dumbass? You posted naked pictures and linked to adult sites. Of course they deleted your profile."

And you'd be right. Like I said, MySpace and YouTube both prohibit naughty stuff. MySpace prohibits "obscene" material, whatever the hell that is, while MySpace prohibits "pornography," whatever the hell that is.

Apparently pornography includes topless shots of Amber Peach taken from behind, but not this customized photo gallery of models from Suicide Girls. Please note how all of these shots are hosted on MySpace.com and are at least as risque as Peach's topless-from-behind shot, and every photo links to the Suicide Girls site -- both presumably in violation of MySpace's own terms of service.

They offer no definitions for these slippery terms, and according to longtime webmaster Loren Williams, they leave the interpretation and execution of their terms of service up to rank-and-file employees who may not be web-savvy enough to properly police their own sites.

Williams, who operates under the Net-handle "Lolo," runs several sites, including adult sites CheapNookie.com and AdultJokes.com, as well as his personal blog, GhettoWebmaster.com.

But he does most of his heavy-duty online ass-kicking on BurntPickle.com, where he debunks adult dating websites and fights back against the ubiquitous MySpace webcam profiles.

"If you give rank-and-file employees the power to delete profiles, it'll fuck everything up," Williams said.

Here's a common tactic: Get a group of friends to gang up on a profile and send mass e-mails calling for its deletion. Jerks who practice tactics like these are commonly called trolls, and Williams said even the simplest troll tricks will slide by average employees at these companies.

Furthermore, he said that the jillions of fake webcam profiles on MySpace have ruined the site for actual hot babes, as well as upstanding members of the adult industry like busty blond Allie of NaughtyAllie.com, who got her MySpace profile spiked because she linked back to her own site -- just like Suicide Girls does now.

Adult star Sunny Lane spoke with XFANZ about her MySpace troubles. She stressed that above all else, she tried to follow the site's terms of service but still wound up losing a profile with 6,000 friends.

"We did everything we could to follow the rules," she said. "I'm a businesswoman, and I wanted it to be a place where I could connect with my fans easily, and it was taken away from me with no warning or reason."

She has a new profile at MySpace.com/TheRealSunnyLane.

To be fair, some Web 2.0 sites like adult content. Viral video sites like MetaCafe.com, Veoh.com and DailyMotion.com have all set aside areas on their site for adult content. These sites rely on their users to self-designate their content as adult, and they further require casual surfers to verify their age and sign up for a full membership to be able to see the naughty stuff.

But the big boys don't do any of this, and who knows why? Maybe because they're owned by huge national companies? Maybe because they play to a wider audience and want to maintain a squeakier, cleaner image?

XFANZ has had its own troubles with Web 2.0, including wrangling with Digg.com and YouTube. Fark.com sent us a polite email asking us to label our submitted links "NSFW" (not safe for work), while our most epic battle happened while trying (and succeeding) to keep our Wikipedia entry. The grotesquely curious might want to read the discussion over whether or not to delete our page, which lays bare many of the inconsistencies and hypocrisies that plague Web 2.0 today.

The good news is that the adult industry is responding with better profiles and more websites that directly cater to adult content. Besides XFANZ, you've got Xpeeps.com, Socialporn.com, AdultSpace.com, Foobies.com, PornoTube.com and Xtube.com to name a few.

The moral of the story, guys is: If you love porn, be sure to read the terms of service.