I've used it a long time ago - before file sharing websites like rapidshare were widely known. Back then you had to get your porn by using peer2peer file sharing which was killed by viruses and malware.
For a short while there myfreepaysite was a pretty good place to get hard to find videos.
There were two big problems though:
#1. You only got 1 free video per email address (so I had to keep registering new email addresses)
#2. The videos I was able to download were only good for a couple of days. They were programmed to self destruct after a certain time, and there was no way at the time to copy them or share them.
I haven't been there for years, but with the advent of filesharing and porn forums, I certainly wouldn't go through the trouble anymore.