This Node.js mailing list thread (which @Richard Fontana pointed me to) inspired me to write up some thoughts on what project leaders should think about when considering a corporate home for their project. I posted it as a blog both on my personal blog and Conservancy's blog (crossposted to maximize distribution).
BTW, I actually tried repeatedly over nearly two days to post to the Node.js mailing list, which is a Google group. I am clearly subscribed to the group with both my Conservancy and ebb.org email addresses, but posts from either just get silently dropped AFAICT. My SMTP server seems to indicate successful delivery with: Dec 5 13:25:31 SERVER postfix/smtp: 89480E1700: to=<firstname.lastname@example.org>, relay=gmr-smtp-in.l.google.com[188.8.131.52]:25, delay=0.83, delays=0.3/0.01/0.26/0.26, dsn=2.0.0, status=sent (250 2.0.0 OK 1386267931 e8si375198igg.0 - gsmtp)
I get no bounces and no indication that my post is being dropped on the floor. And, you cannot submit a bug report to Google Groups without a Google Account. So, while it looks like you can participate to a Google Group without a Google Account, it seems that might be harder than it looks sometimes.
I wonder if there are any non-profits who'd be willing to take on the project in that situation.
I posted a followup in the thread on the Node.js mailing list which inspired my original post.