Why does every adult site is spammed?

Hello guys. Few days ago I bought Domcop subscription and I notice that practically 90% of expiring adult sites are spammed.
What do you think about it? Why so many adult domain are spammed?

Well, noone except maybe other adult sites wants to link to adult sites, competition is fierce, you need very high traffic volumes to make any money at all, so churn & burn is often an easiest option. Was diifferent 10 years ago, but with the dominating tubes with an abundance of free content and educated surfers becoming blind to normal advertising, everything became more agressive.

Because that's the only way they can try ranking

The main reason for the adult content spam is pornographic nature and such as undisguised images and verbal description etc. and link to pornographic sites. Sometimes it includes an offer for product designed to increase the sexual potency such as Viagra or sex toys.

it is simple as that, adult bloggers try ranking with adult back links + automated tools blast links to their sites. most people try this and get ranked in short period. after all, they are use-and-throw kind of sites

Exactly, its so competitive, and its very hard to build good backlinks - most providers refuse to accept adult niches, so spamming often seems like the only way to go.

Because a lot of people who start out in adult now have no clue what they are doing, buy cheap links, get link trades from any crap they can find, then when it doesn't work they give up and let their domain expire.

Its because Google hates that niche anyway so people have turned to churn and burn mostly in the porn niche. Only the BIG boys aren't fly by night operation these days.

-ThopHayt

Thank you... But then why many of them are still indexed in google?

This is not necessarily true.

While a lot of the lower tier adult websites are promoted primarily through link sales and outright link spam, there are many up and coming adult sites that are playing the game the smart way.

What they're doing is that they would release attention-grabbing press releases with a broad appeal.

For example, releasing porn viewing habits in terms of demographics or in terms of country of origin gets a lot of media attention.

If you ever need ideas on how to promote an adult site using press releases and totally legit mainstream media, pay attention to what Pornhub and Okaycupid do regularly.

They often come up with very controversial press releases that get a lot of attention.

Enough of this attention is turned into backlinks from mainstream media sites.

That's why they rank very high.

I mentioned a dating website here because dating is just as competitive as adult entertainment.

Adult dating is very lucrative and is also very hard to promote using regular SEO.

Many search keywords in Google will comes under adult websites.

It is an illegal way to rank their site in Google SERP.
Unnecessary adult contents which breaks the Google rules.
Perform negative SEO which makes the site spam.
The site must be natural and no offensive contents are be there, while the Google crawls.

Since, the google index the adult website. Because the owners of these websites use some adult invisible bots to Google SERP while in searching. In some cases, they may be use some cloaking technique to show the different contents to Google. ie., making fool the Google by the adult site owners.