GutMagic already works perfectly on the iPad and iPhone. Perhaps Jim could update the wording of the links or their descriptions? You know, lay folks don't really know (or care) what a "MOBI Edition" or "EPUB Edition" is. I would prefix the first link with the word "Kindle" (nice & bold), and the second heading with "iPad, iPhone" (again, nice & bold).
Sorry, my site *is* getting stale and out of date in part because I believe PG is now doing a good enough job supporting Kindle and EPUB that for the most part it is time to hand the customers back to PG. FreeKindleBooks does remain a great site for browsing books from the most famous authors (and PG is welcome to pick up that part of it too if they want.) Re offering better support for iOS, note the name of the site: freeKINDLEbooks.org -- I decided early on, though I sometimes might regret it, that I was going to try to support ONE device well, rather than pretend to support all the devices in the world, and end up doing it poorly. Go set up an iOS-centric site, or go set up an EPUB centric site yourself! Or, try to work with PG to get them to understand what it really means to support real-world customers, not just computer geeks.