If there's a publisher out there who is doing almost exclusively Swords & Wizardry materials, I am putting together the information page at the back of the Swords & Wizardry Core Rules, which is highlighting blogs and third party publishers.
If the circulation of the free pdf follows previous patterns, there will be several tens of thousands of downloads on this, although I have no idea how many of those will actually be unique users, and of those how many will actually read the full pdf rather than just foldering it for later (never) reading.
Still, it's a really, really freakin' big number: this clearly gets into the mainstream audience, and with the addition of Frog God Games into the S&W mix, the numbers could be higher than anything I've seen before on the earlier versions.
I already have NOD, S&W Companion, S&W Quickstart, Ruins & Ronin, and World of Onn. I'm checking other publishers too (Backswords, Hoodlums, GM Games, etc), but please don't assume that I'll catch everyone. Let me know if your product line or blog is heavy enough on S&W content to be appropriate for listing in the rules as a place to direct people. No slap intended to non-S&W publishers, but since this is going into the actual rulebook as a resource list specifically for this game, I'm not creating a general list of old-school resources here. I still plan on putting together a free download of "compatible" materials with a much broader scope on the S&W site, but last time I tried that I didn't get any publisher responses to help out with it, so that's delayed.
Please contact me by email (mythmere at yahoo dot com) if your site is primarily dedicated to S&W materials.