In the spirit of inclusivity, I'm pretty sure there are people out there who would participate but have problems opening an Usenet account.
Google Groups is ok for consulting the 'archives' and lurking, but is far too slow for any kind of continuity when posting. I initially worked through mailgate (I'd never even heard of Usenet) and only moved to a proper Usenet account when that went through a spell of unreliability. Well it is apparently up and running again and is (at least was) quick and simple to drive. Give it a go:-