Some time last year I mirrored dtdb.co and added all of the falling rock cards (http://doomtown.fr) up to the last few sets. (find the site at http://dtdb.fr)
Falling Rock added nearly 600 new cards to the game that are surprisingly good and seem relatively balanced considering they're all fan made. I find them functionally very playable and especially enjoyable around the holidays (There are holiday themed outfits). But really some mechanics are just badass like Crow Familiars, Blood Counters, etc.
There's an outfit and several builds themed around Harlots! I mean, you got to have prostitutes in the old west!! And let me tell you son, you don't want to tangle with a Harlot in the wrong way!
Just as I was getting into it, AEG dropped Doomtown. I think I had about 10 accounts registered then poof... Nothing. Absolutely zero interest. To put it clearly, the site costs me money to run. If no one is interested in using it at all I'm nearly to the point where I'll just run it at home on a virtual machine.
The shipping notification for the kickstarter got me interested again so I just finished inputing the last card from the fan-card Falling Rock series.
Over the next 3 months or so if there is any interest at all I plan to do a few more things.
-I'll add all of the newer pinebox cards, update the rules, and spruce up regardless... This is mostly for me.
-If more than 20 people register and seem to be using the site I'll start looking into adding a print-a-deck option in the site so you can home-print paper errata and the falling rock cards to use sleeved in your current doomtown decks. Something to use all those extra copies of crap cards for. The basic gist is that you'll arrange your deck on the site and click something that will allow you to print the falling rock cards and errata cards on 8.5/11 at home. Then you would cut these out and sleeve them with regular cards for play. Or hell. Go to printer studio and get the real thing as instructed on doomtown.fr
-If enough people stay interested I will fix misspellings and errata on the falling rock cards and balance based on community input.