For many years I have been playing with progressive ideas through my website “http://www.whisperdivine.uk “, really for my own amusement.
It is pretty low-tech, as I write in CSS/HTML, but that does, I think, keep it scam-free and free of advertising.
Somehow it got linked to a blog in the US Progressive Church website. I think that I reacted to someone else’s blog with a response and a link. It has since received 2000-5000 hits a month.