Those that want to support JAV content creators can go ahead but or the rest of us there are free sites like Javfind where we can enjoy lots of free Japanese porn clips and movies.
Javfind.com finds places that host videos and puts the content in one place, dividing it up first and foremost into censored and uncensored. There are hundreds and thousands of scenes available with lots erotic, hardcore, lesbian, and fetish content. Think of a fantasy like married woman, older sister or office lady, and you're bound to get a lot of results. Quality is quite good overall, and you'll also find some HD videos, too. But, while all of this is great, there are a few issues. You might get a message stating 'File could not be played' which can start to wear on you quickly, although it's not always like that. Other than that there's no real download feature, but if the website isn't acting up, you should have no trouble streaming videos.
Content can be sorted with about 60 categories (slender, uniform, mature, lesbian, etc.) or you can go to a model index and get an overview of a model's entire porn opus. There's also a list of the latest searches at the bottom of each page. Finally, there aren't many ads.
Javfind.com looks great on paper, with a large number of JAV movies and decent options to sort all of them, but you can experience some issues with playback from time to time.