Here you go I am no longer in the adult biz but did a lot of free traffic generating while I was. Some of these ways are old so not sure how well they work now.
Firstly there are so many different ways to generate free traffic and it can be very time consuming.
A few of the ways I use to use:
Forum Posting ( Apart from posting on other forums, I also had my own forum which I allowed webmasters and affliates to post thier links to so this in itself generated me free traffic)
Reddit (we all know this lol)
Link exchanges ( this can work sometimes depending on where the link is placed and if it is in the same niche as what your site is about)
Twitter accounts ( made some good traffic from this but you need to interact with your follwers so can be time consuming)
FB accounts (same as above)
Youtube accounts (again can generate good traffic... One way around the non porn with Youtube is to use "sexy videos" and send the users to a non nude but sexy site with links to the porn site you are promoting)
Pinterest and similar sites
Link dump sites (These used to be popular and some of them would send a lot of traffic)
Other adult social media sites ( There used to be a few of these about, U could make up a profile using purchased content and send the traffic to the same profile on the porn site you are promoting)
Search engines other than just Google ( kinda obvious this one lol)
These are just a few which i used in the past there are still many other ways to get free traffic some of it is crap some of it would convert ..hope this helps a few
