There was a time when searching for adult material online consisted mainly of looking at free previews of adult pay sites or portals that have links that take you all over the net for just a few peeks at some rather lousy pics.

Then came Web 2.0, and surfing has never been the same again. If searching for adult content was such a laborious process 2-4 years ago, the advanced features of today’s adult Web 2.0 sites make it a much more enjoyable experience. Here are some of the best adult web2.0 sites today:

1. YouPorn

Just like YouTube, only with porn content. And it’s the highest trafficked adult website in the world. Apart from the porn videos that users can upload to the site, YouPorn also offers an online dating service, a chatroom, and video chat.

2. RedTube

One of the fastest growing adult websites in the world, it is quite similar to YouPorn, and the videos are just as great. Maybe even better, if only for the huge but good quality clips. One neat feature is the mini-slideshow preview you can check out when you rollover the thumbnail images.

3. Twatr

Still in development and is still SFW, for now. But if descriptions that it is basically a Twitter for adults, then this is one site to watch.

4. PornoTube

Another YouTube clone, only more entertaining. A well-designed site with on-demand Flash videos, all embeddable, and are all tagged and can be browsed via a tag cloud or by straight or gay content.

5. Zivity

An adult content social network and user generated content site that features the work of both amateur and professional models and photographers alike.

6. Red Light Center

Modeled after Amsterdam’s Red Light District, this site allows users to make their wildest sexual fantasies come true, virtually of course. Features virtual strip shows, brothels or anything sexual that users’ fantasies can imagine.

7. SuicideGirls

The adult site for those who are sick and tired of all those Barbie-doll models and want something more real and radical. It boasts of more than 1500 alternative models that represent women of all sizes, races, ages and styles, and many of them have tattoos and piercings.

8. EroShare

Considered the Flickr of user-generated porn sites. Users are encouraged to upload their own erotic photos, and each user is given 2 GB of free storage. And just like its mainstream counterpart, it has all the standard photo site functions like friends, tagging and albums.

9. Boobik

This adult site focuses more on social networking, kind of a Facebook for porn. Users can share and broadcast their fantasies, experiences and of course, pornographic materials with each other.

10. MegaRotic

Visitors can watch, rate and comment on videos for free, but the number of videos that can be watched are limited to 10 per day for non-members and 20 for members. Upgrading to a premium account at $9.99 a month gives users unlimited video streaming downloads.

11. Fantasti.cc

Users can search, watch and download more than 60,000 videos, for free, and without limitations. Rating and reviewing functions are also available.

12. XTube

Huge site hosting thousands of amateur and professional clips. Dozens of straight and gay categories also make it easier for users to find what they want. And with partnerships with adult companies, users can watch DVD previews of the latest adult releases.

13. Shufuni

Basically similar to other sites with user-generated porn, but the big difference is that its videos are not embeddable. But lesser restriction on movie length and decent video quality make this porn site one of the better ones out there.

14. Haporn

It’s your standard site packed with a lot of user-uploaded, share-ready porn clips. One unique aspect is its “VIP” component, which you can either buy or earn by contributing your own videos.

15. YuVuTu

A site that focuses more on amateur and foreign porn content. Users can also contribute their own hard- and softcore videos.

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