Now afterwards it's pretty easy for me to see that Hardcore Junky exist and is well established.
But at the time I already had other *junky.com domains, all within different niches. They have a good sound to them. I had never dealt with general hardcore but I needed a domain to dump some general random stuff on, that's how I came up with the domain.
When I register domains I usually make a list of 100 domains that sounds good, then I check which ones that are available and register them. To go to each site site and look them up in Google would take forever. I don't really think it's worth it for general terms, I consider hardcore and junky to be pretty general.
If I would've had specific terms that aren't really porn related in a porn domain, I would look it up more thorough to be sure it's not used elsewhere, like names: richard, tommy, mark. Places: library, park, couch, forest, playground and so on.
But it's inevitable that linklists/tgps that use general porn terms will find domains close to their own snatched up if they haven't taken them already.
Like these:
freesitexxx.com
sextoplist.com
1freepornfinder.com
hqseek.com
lust4porn.com
boobfind.com
allpornlinks.com
coolhardcore.com
supersexlinks.com
premium-sex-links.com
sex-seek.com
I went through my stats yesterday and I had 1 typein for February, so I didn't get any of HCJ's traffic

. But I registered some new domains and yesterday was the last day I used xxxHCJ.