Hi dkg! Thanks a lot for your feedback.
Kyle Huff, the original implementator of gpgAuth, is here on my pidgin Buddy list. I know for a fact that he's quite busy (he became a parent a little while ago). I didn't still contact the FireGPG guys (Oh boy, I love it!).
Why, you might ask? Simple: you ask for the RFC. The RFC is non existant now. I had a quite nice draft, which I dismissed in favor of more active 'hands on' research. I never mentioned this publicly, but the amount of research and issues I found while coding for Apache and Mozilla led me to first consider a working 'reference implementation', then write an RFC when I finally reach a certain level of functionality. Also, as Enigform is developed in the arms of OWASP (
www.owasp.org, the Open Web Application Security Project) I have a big bunch of people behind me, finding bugs and protocol issues, doing security testing, etc.
This first Beta release, along with the Wordpress plugin, is the first REAL step to get community feedback.
I want, of course, to be in touch with FireGPG, Enigmail (BTW, the name Enigform is an obvious tribute to Enigmail), GnuPG (Werner Koch is actually quite up-to-date with Enigform). But the truth is that I'd be ashamed right now. I'm working on improving the code, protocol, and everything, but I don't feel up to the level of those guys

BTW, I've updated the first post of this thread, I've added an Enigform + gpg4win installation guide, with all needed steps (gpg4win installation, keypair creation, public key sending to keyserver, enigform install and test).
Yours,